Grammar Checker Service

Expert Grammar Checking
for Academic Writing
That Actually Works

Every grammatical error in your essay, dissertation, or research paper costs you marks, credibility, and clarity. Our subject-specialist grammar checking service goes far beyond automated tools — identifying syntax errors, punctuation failures, register problems, and sentence structure issues that Grammarly misses, and explaining every correction so you understand why it was made.

Subject-specialist editors
4.8-star verified average
Tracked changes returned
ESL-specialist editors
Grammar errors we correct — before & after
Subject-Verb Agreement
✗ “The data shows a significant correlation between the variables.”
✓ “The data show a significant correlation between the variables.”
Rule: “Data” is plural; “shows” is singular — requires “show” in formal academic usage
Register — Informal to Formal
✗ “This proves that the hypothesis is correct.”
✓ “This supports the conclusion that the hypothesis is correct.”
Rule: Academic writing requires hedged language — “proves” overclaims in empirical contexts
Dangling Modifier
✗ “Having conducted the interviews, the data revealed new patterns.”
✓ “Having conducted the interviews, the researchers identified new patterns in the data.”
Rule: The modifier’s subject must match the main clause subject
Tense Consistency
✗ “The study finds that participants responded differently across conditions.”
✓ “The study found that participants responded differently across conditions.”
Rule: Past tense throughout when describing completed research
Trustpilot 4.8
Subject-Specialist Editors
ESL Expertise
NDA Protected
Same-Day Available
Free Revisions
The Service and Its Purpose

What a Professional Grammar Checker Service Does — and Why Automated Tools Are Not Enough

Grammar is not a peripheral concern in academic writing. It is the system of rules that makes written communication precise, credible, and comprehensible to a specialist reader. In academic contexts specifically — essays, dissertations, research papers, theses, reports, and journal submissions — grammatical correctness signals competence, and grammatical errors signal carelessness. An examiner encountering repeated subject-verb disagreements, inconsistent tense shifts, or informal register in a postgraduate dissertation forms a judgment about the quality of the work before they have finished reading the first paragraph. That judgment is difficult to reverse.

A professional grammar checker service is a human-led review of your written work by an editor with subject-area expertise and specific training in the grammatical conventions of formal academic writing. It differs from automated grammar checking tools — Grammarly, ProWritingAid, Microsoft Editor, and similar platforms — in several important ways. Automated tools operate through pattern recognition: they identify strings of text that match patterns associated with error and flag them for correction. They do not understand meaning, context, disciplinary convention, or intent. A human editor reads your sentences with comprehension, understands what each sentence is trying to say, identifies where the grammatical structure fails to say it correctly, and corrects the error in a way that preserves your meaning.

This distinction is most consequential in three areas. First, in sentences that are grammatically wrong in ways that depend on disciplinary knowledge — “the data shows” is a common error that most automated tools miss, because “data” is treated as singular in everyday English despite being the plural of “datum” and requiring plural agreement in formal academic writing. Second, in sentences where the grammar is technically correct but the register is wrong for the academic context — informal contractions, overclaiming language (“this proves that”), and colloquial phrasing that automated tools do not flag as errors but that weaken the authority of academic prose. Third, in complex sentence structures common in academic writing — embedded relative clauses, nominalisations, and parallel constructions — where errors require a sentence-level understanding that no current automated tool reliably achieves.

For a broader overview of our academic writing support, the editing and proofreading service covers the full scope of structural and language editing we provide. For students who need complete writing support rather than correction of an existing draft, our essay writing service and dissertation writing service are the appropriate starting points.

Grammar in Academic Writing: What the Research Shows

The relationship between writing quality and academic assessment outcomes has been studied extensively. Research from writing centres and applied linguistics programmes consistently identifies surface-level errors — grammatical mistakes, punctuation failures, spelling errors — as factors that negatively affect assessors’ ratings of academic quality, independent of the substantive content of the work. A study published in the Journal of Second Language Writing found that raters consistently penalised second-language writers more heavily for grammatical errors than for organisational weaknesses, even when raters were instructed to focus on content. This finding has direct implications for international students whose first language is not English: grammatical accuracy is not just stylistically desirable — it affects how examiners evaluate the substance of your argument.

The APA Publication Manual — the style guide used across psychology, education, and social sciences — dedicates substantial guidance to grammar in academic writing, specifically addressing bias-free language, sentence construction, active versus passive voice, and the grammatical conventions that distinguish rigorous empirical writing from casual prose. Understanding and applying these conventions requires knowledge of the style guide and disciplinary norms that automated tools do not possess.

Who this service is for: Undergraduate and postgraduate students submitting coursework, dissertation students preparing final drafts for submission, international students writing in English as a second or third language, researchers preparing journal manuscripts, and professionals in academic roles who need their written English checked by a subject-literate human editor before high-stakes submission.

Grammar Checker Service — At a Glance

Service overview and scope

Also calledProofreading, sentence correction
Academic levelsUndergraduate through doctoral
Editor credentialsPostgraduate; subject-specialist
Errors coveredSyntax, punctuation, register, style
ESL supportYes — specialist ESL editors
Delivery formatTracked changes + comments
Style guidesAPA, MLA, Chicago, Harvard
NDA coverageEvery engagement
Starting from$7 per page
20+
Categories of grammatical error identified and corrected across syntax, punctuation, and style
40+
Academic disciplines served — from nursing and law to economics and computer science
24h
Standard turnaround for essays up to 5,000 words — same-day available on request
4.8/5
Verified satisfaction rating across 1,240+ Trustpilot and Sitejabber student reviews
Error Categories

The Grammar Errors We Fix — Every Category, With Examples

Academic writing contains a specific and recurring set of grammatical errors. The errors below represent the most common categories found in student work across disciplines — from first-year undergraduates through to doctoral researchers.

Subject-Verb Agreement

The grammatical rule requiring that a subject and verb match in number — singular subjects take singular verbs, plural subjects take plural verbs. Academic writing introduces complications that trip students at every level: collective nouns, indefinite pronouns, inverted sentence structures, and technical terms like “data,” “criteria,” and “phenomena” that are plural despite feeling singular.

“The results of the experiment shows a clear pattern.”
“The results of the experiment show a clear pattern.”

Tense Consistency and Sequence

Academic writing requires consistent and appropriate tense use throughout each section of a paper. Literature reviews typically use present tense to describe existing findings; methodology chapters use past tense to report what was done; results sections use past tense; discussion sections shift between past (describing findings) and present (drawing conclusions). Inconsistent tense shifts create confusion about whether reported findings are current or historical.

“Smith (2019) found that stress increases cortisol levels, which lead to…”
“Smith (2019) found that stress increased cortisol levels, which led to…”

Pronoun Reference and Agreement

Pronoun errors in academic writing include reference ambiguity (unclear antecedent), number disagreement (plural pronoun for singular noun), and inappropriate use of first-person or second-person pronouns in formal academic contexts. Increasingly, singular “they” is the correct choice for gender-neutral reference to an individual, but older writing habits leave many students using “he/she” constructions or defaulting to incorrect singular forms.

“Each participant completed their own… but the researcher recorded his response.”
“Each participant completed their own… and the researcher recorded their response.”

Dangling and Misplaced Modifiers

A dangling modifier is a phrase or clause that does not grammatically or logically connect to the word it is meant to modify. In academic writing, this error most commonly occurs with participial phrases at the start of a sentence where the implied subject of the phrase differs from the grammatical subject of the main clause. It is consistently identified as one of the more serious structural errors in academic prose because it creates sentences that are either ambiguous or logically incoherent.

Using thematic analysis, themes emerged from the data.”
Using thematic analysis, the researcher identified themes from the data.”

Parallel Structure and List Construction

Parallel structure requires that items in a series, list, or comparison use the same grammatical form. Errors in parallelism make sentences grammatically inconsistent and difficult to read. This is particularly common in academic writing when listing multiple findings, describing multiple characteristics of a concept, or constructing comparative clauses. The error is subtle enough that automated tools frequently miss it, yet it is immediately apparent to experienced readers.

“The aims were: collecting data, to analyse results, and drawing conclusions.
“The aims were: to collect data, to analyse results, and to draw conclusions.

Run-On Sentences and Sentence Fragments

Run-on sentences occur when two independent clauses are joined without proper punctuation or a coordinating conjunction. Sentence fragments occur when a dependent clause or phrase is punctuated as a complete sentence. Both are common in academic writing where students are attempting to express complex ideas and resort to fusing clauses or cutting sentences at the wrong point. Both can be corrected through punctuation adjustment, conjunction addition, or sentence restructuring.

“The study produced significant results. Which supported the hypothesis.
“The study produced significant results, which supported the hypothesis.

Most Common Grammar Errors in Student Academic Writing

Based on corrections across undergraduate and postgraduate submissions reviewed by our editorial team.

Tense inconsistency
82%
82%
Subject-verb agreement
76%
76%
Register / informal language
71%
71%
Comma usage errors
68%
68%
Pronoun reference issues
58%
58%
Dangling / misplaced modifiers
49%
49%
Parallelism failures
44%
44%
Article errors (a/an/the)
62%
62%
The Core Distinction

Why Human Grammar Checking Catches What Grammarly Misses

Automated grammar checking tools have improved substantially over the past decade, and for everyday writing they catch many common errors reliably. For academic writing specifically, however, their limitations are significant enough to make human grammar checking not merely preferable but often necessary. Understanding why requires understanding what automated tools actually do.

Tools like Grammarly, Microsoft Editor, and ProWritingAid use a combination of rule-based grammar checking and machine learning trained on large corpora of text. They are highly effective at catching errors that have a consistent textual pattern: missing apostrophes in contractions, double spaces, basic subject-verb disagreements in short simple sentences, and common spelling errors. They are substantially less effective at errors that require comprehension of meaning, disciplinary knowledge, or contextual judgment.

Consider the sentence: “The literature suggests that poverty effect educational outcomes.” An automated tool will correctly flag “effect” as likely incorrect and suggest “affects.” A human editor will make the same correction — but will also notice that “the literature suggests” is vague hedging that should name specific sources, that the claim should be scoped more precisely, and that the construction would benefit from a specific citation. The automated tool sees a word-level error. The human editor reads a sentence and understands what it is trying to do.

This is even more apparent with disciplinary register. A sentence like “This study proves that the treatment works” contains no grammatical error that any automated tool will flag. It is grammatically correct. But it is also epistemically wrong for academic writing in a scientific context: empirical studies do not “prove” things, and this overclaiming language is a sign of methodological misunderstanding that would concern any examiner. A human editor with subject knowledge will catch this and suggest “provides evidence that” or “supports the conclusion that” — corrections that require understanding of how knowledge claims work in empirical research.

The research literature on automated writing evaluation supports these limitations. Studies examining the performance of automated scoring tools on academic writing consistently find that they correlate reasonably with human ratings for surface-level errors while performing poorly on discourse-level quality, disciplinary convention, and argument coherence. For a detailed treatment of what academic language correction requires, the work of applied linguists at institutions including Cambridge has documented the gap between rule-based error detection and the context-sensitive judgment of expert human readers.

A practical test: Run your dissertation introduction through Grammarly, accept all suggested corrections, then submit it to our grammar checking service. The human editor will identify errors Grammarly missed, register problems Grammarly cannot detect, and discipline-specific conventions Grammarly has no knowledge of. The difference is consistent and measurable.

Automated vs. Human Grammar Checking

Automated Tools

Basic spelling errors
Simple subject-verb agreement in short sentences
Missing apostrophes in contractions
Double spaces and basic formatting
Complex subject-verb agreement (data, criteria, phenomena)
Academic register and hedging language
Disciplinary terminology errors
Context-dependent tense in academic sections
Dangling modifiers in complex sentences
Citation punctuation in APA/Chicago
Overclaiming and epistemic language errors
False positives — “correcting” correct academic usage

Human Expert Editor

All errors caught by automated tools
All errors automated tools miss
Academic register and disciplinary convention
Tense consistency across entire document sections
Citation and reference punctuation
Overclaiming and hedging language
Sentence structure in context of surrounding text
Paragraph-level consistency and flow
ESL-specific error patterns by first language
Style guide compliance (APA, Chicago, MLA)
Explanatory comments on every non-trivial correction
Real Corrections

Before and After: What Grammar Checking Looks Like in Practice

These examples show the type of corrections our editors make on real academic writing. Each example includes the error type, the correction, and the rule that applies.

Original Text
“This study aimed to investigated the impact of social media use on academic performance among university students. Alot of previous research has looked at this topic, however none of them have considered the moderating role of self-regulation. The data was collected using an online survey and was analysed using SPSS, results shows a significant negative correlation.”
Verb form error Spelling Informal register Subject-verb agreement Comma splice Tense shift
After Grammar Check
“This study aimed to examine the impact of social media use on academic performance among university students. A substantial body of previous research has addressed this topic; however, no prior study has considered the moderating role of self-regulation. Data were collected using an online survey and were analysed using SPSS; results showed a significant negative correlation.”
8 corrections Register raised Consistency fixed APA compliant
8–15
Average corrections per 250-word paragraph in typical undergraduate submissions
3–6
Average corrections per 250-word paragraph in postgraduate submissions — errors are fewer but more complex
100%
Of corrections returned with tracked changes and explanatory margin comments
Register and Tone

Academic Register: The Grammar Errors That Are Not Errors — But Cost You Marks

Register refers to the level of formality and the stylistic conventions appropriate to a particular context. Academic writing has a specific register — formal, hedged, impersonal, precise, and disciplinarily appropriate — and deviations from it are penalised in academic assessment even when they involve no technical grammatical error. A student who writes “this clearly shows that” rather than “this suggests that” has not made a grammatical mistake, but has made a register error that signals unfamiliarity with epistemic conventions in empirical writing.

Register errors are the category of language problem that automated grammar checkers are least equipped to identify. Grammarly does not know that “clearly” is an epistemic overclaim in an empirical argument, that “stuff” and “things” are insufficient in academic prose, that “I think” should be replaced with “the evidence suggests,” or that contractions are inappropriate in formal academic writing. These are matters of disciplinary convention and communicative purpose that require a reader who understands both the language and the academic context.

Our editors are trained to identify and correct register errors systematically: informal vocabulary, overclaiming language, evaluative language that is not earned by the argument, hedging that is either insufficient (overconfident) or excessive (weaselling), vague quantifiers (“many,” “some,” “a lot”), and the deployment of first-person that is either inappropriate for the genre or used inconsistently. The correction of register errors often produces the largest improvement in perceived academic quality — because register is what distinguishes writing that sounds like a student from writing that sounds like a scholar.

For students writing in a language that is not their primary one, register errors are especially common because the appropriate level of formality does not transfer directly from other languages. Chinese academic writing, for example, often uses more direct and confident assertions than English academic writing conventions permit; Arabic academic writing sometimes involves rhetorical structures that sound informal when translated into English. Our ESL-specialist editors are trained in these cross-linguistic patterns and can identify the source of register problems rather than simply flagging their surface symptoms.

Register vs. grammar: A sentence can be grammatically correct and still be wrong for academic writing. “This completely destroys the previous theory” is grammatically fine and academically inappropriate — it overclaims, uses hyperbolic language, and fails to acknowledge the incremental nature of scholarly knowledge. Our grammar checking service addresses both the grammatical level and the register level, because both affect your marks.

Register Correction Examples

Informal to formal academic English

Context Informal / Wrong Academic / Correct
Claiming
“This proves that stress causes illness.”
“This suggests an association between stress and illness.”
Quantifying
“A lot of studies have found…”
“A substantial body of evidence indicates…”
Opinion
“I think this is because…”
“This may be attributable to…”
Vague noun
“These things affect the results.”
“These factors influence the outcomes.”
Contraction
“The method didn’t control for confounds.”
“The method did not control for confounding variables.”
Colloquial
“The results blew the previous theory out of the water.”
“The results challenged the assumptions of the prevailing theoretical framework.”
Hedging
“The study definitely shows a causal link.”
“The study provides evidence consistent with a causal relationship.”
Article use
“The poverty is a social issue.”
“Poverty is a social issue.”
Vocabulary Precision

Word Choice in Academic Writing: Common Substitutions Our Editors Make

Choosing the wrong word is a grammar-level error when the substitution changes the grammatical function of a sentence, and a register-level error when the word is correct but insufficiently formal or precise. Our editors address both categories.

ContextInformal / ImpreciseAcademic PreferredWhy it matters
Introducing findingsshows / provesindicates / suggests / demonstratesHedging prevents overclaiming in empirical work
Making comparisonsbigger / smaller thangreater / lower than; exceeded / fell belowPrecise quantitative language in results sections
Describing quantitya lot of / lots ofa substantial proportion of / considerable / numerousPrecision required for academic credibility
Discussing causescaused by / led towas associated with / may be attributable toObservational data rarely justifies causal language
Expressing limitationthe study was bad becausea limitation of this study is thatFormal evaluative register in discussion sections
Transition logicbut / also / sohowever / furthermore / consequentlyAcademic connectives carry precise logical relationships
Defining termsmeans / is aboutrefers to / is defined as / can be understood asDefining language in introduction/literature review
Reporting researchSmith says thatSmith (2022) argues / contends / demonstrates thatAPA citation format and attribution accuracy
Discipline Coverage

Grammar Checking Across Every Discipline — Subject Knowledge Matters

Grammar checking in isolation from disciplinary knowledge produces errors. An editor who does not know that “data” is plural in formal scientific usage, that “the literature suggests” requires a citation, or that passive voice is expected in methodology chapters cannot provide accurate grammar corrections for academic work. Our editors are matched to your specific discipline — not drawn from a general language editing pool.

Each discipline has its own grammatical conventions that constitute correct academic writing within that field. Nursing and health sciences writing follows different reporting conventions from economics writing. Legal writing uses different tense conventions and citation styles from education research. A biology laboratory report has different voice and structure requirements from a philosophy essay. Accurate grammar checking requires knowledge of these conventions.

For discipline-specific academic writing support alongside grammar checking, our specialist services include nursing assignment help, law assignment help, psychology homework help, and economics homework help.

Psychology & Social Sciences

APA 7 grammar conventions, hedging language, passive vs. active voice in methods sections, results write-up grammar.

APA 7Empirical

Nursing & Health Sciences

Clinical terminology accuracy, APA or Vancouver grammar conventions, evidence-based language, patient-facing writing register.

ClinicalVancouver

Law

Legal citation grammar, precise definitional language, Latin terms, case referencing conventions, argument structure grammar.

OSCOLAFormal

Business & Management

Report language conventions, executive-level formal register, APA or Harvard citation grammar, passive voice in methodology.

HarvardReport

Education Research

Qualitative and quantitative methods language, APA convention, participant-protection language, ethical neutrality in reporting.

QualitativeAPA 7

STEM and Life Sciences

Scientific writing conventions, passive voice in methodology and results, species naming grammar, statistical reporting language.

ScientificPassive voice

Economics & Political Science

Technical econometric language, policy paper register, Chicago or APA citation grammar, quantitative results language.

ChicagoTechnical

Humanities & Philosophy

Argumentative prose grammar, Chicago footnote citation grammar, close reading language, theoretical register conventions.

ChicagoArgumentative
International Students

Grammar Checking for Non-Native English Writers: What Makes It Different

A significant and growing proportion of university students worldwide write academic work in English as an additional language. In the United Kingdom, the Higher Education Statistics Agency (HESA) reported that international students constitute over 22% of total UK university enrolments, with the proportion substantially higher at postgraduate level. In Australia, Canada, and the United States, comparable figures apply. These students produce academic writing in a language in which their grammatical competence, however high, is subject to systematic interference from the grammatical patterns of their first language — a phenomenon linguists call negative transfer.

Negative transfer produces predictable, language-specific error patterns. Students whose first language is Mandarin or Cantonese commonly omit articles (“the,” “a,” “an”) because these do not exist in Chinese grammar, and produce tense errors because Chinese does not grammatically mark tense through verb inflection in the way English does. Students whose first language is Arabic commonly produce complex sentence structures with multiple embedded clauses that are grammatically correct in Arabic but difficult to parse in English academic prose. Students from Russian and other Slavic language backgrounds often omit copula verbs (“is,” “are”) and produce errors with determiners. Students from Spanish and Portuguese backgrounds produce specific errors with false cognates — words that look similar across languages but mean different things.

An editor without ESL training who encounters these errors will correct the surface form — change the wrong word to the right word — but may not understand the systemic source of the error or check for other instances of the same transfer pattern throughout the document. Our ESL-specialist editors are trained to identify the first-language source of error patterns and check systematically for all instances, producing a more thorough correction than general grammar checking provides.

For the academic writing support context, the ESL grammar checking service works in conjunction with our broader academic editing and proofreading service and, for students who need full writing assistance, our academic writing services.

Common ESL Error Patterns by First Language
  • Mandarin/Cantonese speakers: Article omission (“the,” “a”), tense errors, missing plural markers, aspect/tense confusion
  • Arabic speakers: Sentence structure complexity, article over-insertion, word order in questions, passive voice formation
  • Spanish/Portuguese speakers: False cognates, subject pronoun omission, ser/estar distinctions affecting “be” usage
  • Russian/Slavic speakers: Omitted copula verbs, definite article errors, aspect/tense confusion, preposition substitution
  • Japanese/Korean speakers: Topic-comment structure influencing sentence order, particle errors transferred to prepositions
  • French speakers: Faux amis (false friends), gender agreement transferred, conditional tense substitution
  • German speakers: Verb placement errors, compound noun over-reliance, formal register over-formality

Preserving your voice: ESL grammar checking corrects what is wrong — it does not rewrite your work in a different style. The goal is that your writing reads as fluent academic English while remaining unmistakably yours in argument, structure, and perspective. We do not replace your analytical work with the editor’s preferred phrasing.

“Grammar is not decoration. It is the architecture of meaning. When the architecture fails, the meaning collapses — regardless of how intelligent the thinking behind it was.”
— On the relationship between grammatical precision and academic credibility
Get Grammar Checked
How It Works

How the Grammar Checking Process Works — Step by Step

1

Submit Your Document

Upload your document with your style guide requirement (APA, MLA, Chicago, Harvard), academic level, word count, and deadline. Include any specific concerns — e.g., “my supervisor noted my tense use is inconsistent” or “English is my second language.”

2

Editor Matching

Your document is matched to an editor with subject-area expertise in your discipline — not a general language editor. A psychology dissertation goes to an editor who knows APA 7 and psychological research conventions. A law essay goes to an editor trained in legal writing.

3

Grammar and Style Review

Your editor reviews the entire document systematically — not just running an automated check — correcting grammatical errors, register issues, punctuation failures, and style inconsistencies. Every non-trivial correction receives a margin comment explaining the rule applied.

4

Tracked Changes Returned

You receive your document with all corrections shown as tracked changes, so you can see exactly what was changed and why. You retain the choice to accept or reject any correction. A summary of the most common error patterns found is included.

5

Free Clarification Round

One free follow-up is included. If you disagree with a correction, want an alternative phrasing, or need the rule behind a specific edit explained further — ask, and the editor responds directly. Grammar checking is not complete until the corrections are clear to you.

Turnaround Times — Standard and Urgent

Standard turnaround for a 3,000-word essay is 24 hours. Urgent same-day grammar checking (8–12 hours) is available for most document lengths. Dissertations and theses require 3–7 days for thorough review. Rush pricing applies for same-day requests.

Submit Your Document
Punctuation

Punctuation in Academic Writing: The Errors That Cost the Most

Punctuation errors are among the most common in academic writing and among the most penalised by examiners who associate them with careless thinking. The errors below are the ones our editors correct most frequently.

The Comma: The Most Misused Punctuation Mark in Academic Writing

Comma errors fall into two categories that are equally common and equally penalised. Comma overuse — inserting commas between a subject and verb, between a verb and its object, or between a restrictive relative clause and its antecedent — creates hesitant, imprecise prose. Comma underuse — particularly in compound sentences, after introductory clauses, and around non-restrictive elements — creates run-on constructions and ambiguity.

The comma splice — joining two independent clauses with only a comma — is the single most common punctuation error in student academic writing across every level and discipline. “The study had a small sample size, this limits the generalisability of the findings” contains a comma splice. The correct options are: a semicolon (“the study had a small sample size; this limits…”), a coordinating conjunction with a comma (“the study had a small sample size, which limits…”), or two separate sentences. No automated tool catches all instances of comma splices, because identifying independent clauses requires syntactic parsing that current tools do not reliably perform.

The semicolon is underused in student academic writing, partly through uncertainty about its correct application. A semicolon joins two independent clauses that are closely related in meaning and could stand as separate sentences. It is also used to separate items in a list when those items themselves contain commas — a usage that is standard in academic writing but frequently replaced incorrectly with commas by students unfamiliar with the rule.

Apostrophes, Colons, and Quotation Marks in Academic Contexts

Apostrophe errors — particularly confusion between “it’s” (it is) and “its” (possessive) — are among the most common in academic writing and are consistently noted by examiners. The possessive apostrophe in academic writing also presents complications with plurals (students’ assignments, not student’s assignments, when referring to multiple students), with compound nouns, and with names ending in “s.”

Colons in academic writing introduce lists, explanations, or examples — but only when preceded by a complete independent clause. “The study used three measures: X, Y, and Z” is correct. “The study used: X, Y, and Z” is incorrect because the colon is preceded by an incomplete clause. This error is common and frequently overlooked by both automated tools and writers who know the rule in the abstract but do not apply it in practice.

Quotation marks in academic writing are used for direct quotations and, in some styles, for titles of articles or chapters. APA style uses double quotation marks for direct quotes and single quotation marks for quotations within quotations. Chicago style uses double quotation marks in American English. The placement of punctuation relative to quotation marks differs between American and British academic conventions — an error that is almost never caught by automated tools because they are not calibrated to the specific requirements of academic style guides.

Punctuation Correction Examples
Comma Splice
✗ “The sample was small, this reduced statistical power.”
✓ “The sample was small; this reduced statistical power.”
Apostrophe Error
✗ “The data supports it’s own hypothesis.”
✓ “The data support their own hypothesis.”
Incorrect Colon Use
✗ “Three themes emerged: including trust, safety, and participation.”
✓ “Three themes emerged: trust, safety, and participation.”
Missing Oxford Comma (APA)
✗ “Variables included age, gender and education level.”
✓ “Variables included age, gender, and education level.”
Hyphenation Error
✗ “A well known limitation of cross sectional research is…”
✓ “A well-known limitation of cross-sectional research is…”

Style guide punctuation: APA 7 requires the Oxford (serial) comma, double quotation marks for quotes, periods inside quotation marks in American English, and specific em dash usage. Chicago uses different footnote and bibliography punctuation. Our editors are trained in all major style guides and apply punctuation conventions specific to your required format — not generic English usage rules.

Student Reviews

What Students Say About Our Grammar Checking Service

Trustpilot 4.8
Sitejabber 4.9
ESL Specialists
All Levels
★★★★★
“I submitted my MSc dissertation chapter and got it back with tracked changes and detailed comments on every correction. The editor didn’t just fix the errors — they explained why each change was necessary, which meant I learned from the corrections rather than just accepting them blindly. My supervisor specifically commented that my language was ‘noticeably sharper’ in the revised version. I use this service for every major submission now.”
YC
Yuki C.MSc Public Health — University of Edinburgh
★★★★★
“English is my third language and I was very worried about the grammar in my PhD thesis. The editor clearly understood both the academic content and the specific error patterns I make as a Mandarin speaker — my article errors and tense inconsistencies were all corrected systematically throughout the document, not just in the first few pages. The corrections were comprehensive and the voice was still mine.”
MW
Ming W.PhD Economics — University of Manchester
★★★★★
“I had been running Grammarly on my law essays for two years thinking that covered my grammar. The first time I used this service, the editor found over 40 corrections Grammarly had completely missed — citation punctuation, legal register issues, comma splices in complex sentences, incorrect use of passive voice in certain sections. It was eye-opening. Grammarly is fine for emails. It is not good enough for a law dissertation.”
RB
Rachel B.LLB Law — University College London
Transparent Pricing

Grammar Checker Service Pricing

All prices are per page of your document (approximately 250 words). No hidden fees. First-time clients receive 15% off automatically applied at checkout.

Undergraduate

Standard Grammar Check

$7
per page (250 words)
  • All grammatical error categories
  • Spelling and punctuation
  • Subject-verb agreement
  • Basic register correction
  • Tracked changes + comments
  • One free clarification round
Most Popular Postgraduate / Dissertation

Advanced Grammar & Style

$14
per page (250 words)
  • All standard features included
  • Full register and hedging review
  • APA/Chicago/Harvard citation grammar
  • ESL-specialist correction available
  • Discipline-specific conventions
  • Summary error pattern report
  • One free clarification round
Doctoral / Journal Submission

Expert Academic Edit

$22
per page (250 words)
  • All advanced features included
  • Journal manuscript conventions
  • Viva-ready thesis language
  • Complex argument clarity review
  • Peer review language standards
  • Full document error pattern analysis
  • One free clarification round

View full pricing at our pricing page. Money-back guarantee applies. NDA on every engagement.

Common Questions

Frequently Asked Questions About Grammar Checking

What does a grammar checker service correct? +

A professional grammar checker service covers all grammatical error categories: subject-verb agreement, tense consistency and sequence, pronoun reference and agreement, dangling and misplaced modifiers, run-on sentences, sentence fragments, parallel structure failures, article errors (a/an/the), preposition misuse, comma errors (splices, over-insertion, missing commas after introductory clauses), semicolon and colon errors, apostrophe errors, hyphenation, quotation mark placement, and capitalisation. Beyond technical grammar, it also covers register — identifying informal vocabulary, contractions, overclaiming language, and vague quantifiers that are grammatically correct but inappropriate for academic writing. Every correction is returned with a tracked change and a margin comment explaining the rule applied.

Is human grammar checking better than Grammarly for academic work? +

For academic writing specifically, yes — substantially. Grammarly and comparable tools perform well on simple, short sentences and common error patterns. They struggle with complex academic sentence structures, disciplinary terminology, context-dependent register, citation punctuation, and errors that require understanding of meaning rather than pattern matching. A typical postgraduate dissertation will contain errors that Grammarly does not flag — register problems, complex subject-verb agreements, modifying phrase errors, and style guide violations — that a human editor with subject expertise will catch. The difference is most pronounced for ESL writers and for postgraduate or doctoral work where disciplinary convention matters most.

Do you check grammar for non-native English speakers? +

Yes — this is one of our most used service categories. ESL grammar checking is handled by editors trained in the specific error patterns that arise from different first languages. Chinese speakers, Arabic speakers, Romance language speakers, and Slavic language speakers each produce characteristic and predictable error patterns in English academic writing. Our editors identify the first-language source of recurring errors and check systematically throughout the document for all instances of that pattern — not just the errors visible on the first page. The goal is that your writing reads as fluent academic English while preserving your argument, structure, and analytical voice entirely intact.

Will the grammar checker change my argument or replace my writing? +

No. Grammar checking corrects errors in the language you have used — it does not rewrite your argument, replace your analysis, or substitute the editor’s preferred phrasing for yours. Where a correction changes or could change the meaning of a sentence, a comment is left explaining the issue so you decide how to address it. Tracked changes allow you to accept or reject every single correction. The purpose is to make your writing grammatically correct and appropriately registered — not to produce a different piece of writing. Your argument, your evidence, your conclusions, and your analytical voice are your work. The corrections make that work communicate more accurately and professionally.

How quickly can my document be grammar checked? +

Standard turnaround for an essay up to 5,000 words is 24 hours. For documents of 5,000–10,000 words, standard turnaround is 48 hours. Dissertations of 10,000–20,000 words require 3–4 days; full dissertations above 20,000 words require 5–7 days for thorough review. Urgent same-day grammar checking (8–12 hours) is available for documents up to approximately 8,000 words at a premium. Rush pricing is clearly indicated at the time of order. Contact us if you have a particularly tight deadline and we will confirm availability before you commit.

Do you check grammar in specific citation styles like APA or Chicago? +

Yes. Citation style compliance is part of the grammar checking service for academic work. APA 7 has specific requirements for punctuation within citations, the Oxford comma, quotation mark usage, hyphenation conventions, capitalisation of headings, and statistical reporting format. Chicago style has distinct footnote punctuation, bibliography formatting, and heading conventions. MLA and Harvard have their own grammar-level requirements. Specify your required citation style when you submit, and the editor applies style-guide-specific corrections throughout — not just generic English usage rules. If your document contains citation formatting errors (missing page numbers in direct quotes, incorrect in-text format), these are flagged as a separate category from grammatical corrections.

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