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Proofreading Checklist: 15 Errors Markers Notice First (and How to Catch Them)

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In short

  • Edit first (argument, structure, clarity), proofread last (spelling, grammar, punctuation).
  • Get distance: a break, a printout or a different font makes your own text unfamiliar.
  • Hunt one type of error at a time, read aloud, and do not trust spellcheck alone.
  • Use the 15-point checklist below on every essay.

Markers are human. A paper full of typos and inconsistent references tells them, fairly or not, that the writer did not care, and it makes good arguments harder to see. Proofreading is the cheapest marks you will ever earn, provided you do it at the right time and in the right way.

Editing and proofreading are different jobs

The UNC Writing Center separates the two clearly. Editing comes first, after the draft: is the paper well organised, is the argument clear, are the paragraphs in the right order, are the citations complete? Proofreading comes last and focuses on "surface errors such as misspellings and mistakes in grammar and punctuation". UNC is explicit: proofread only after you have finished all your other revisions. Polishing a paragraph you are about to delete is wasted time.

Techniques that actually work

  • Get distance. Leave the paper overnight, or at least for a few hours. Your brain fills in what it expects to see in text it has just written.
  • Change the look. Print it, or change the font, size or spacing. Unfamiliar text is easier to read critically.
  • Work in short blocks. Concentration drops over long sessions; twenty focused minutes beat an hour of skimming.
  • One kind of error at a time. UNC's advice: proofread for only one type of error per pass, for example a pass for apostrophes, a pass for citations.
  • Read aloud, slowly, every word. You will hear missing words and sentences that run on.
  • Read backwards word by word to check spelling, or sentence by sentence to check grammar out of context.
  • Circle every punctuation mark and ask whether it is right.
  • Use tools carefully. Spellcheckers miss real words in the wrong place; grammar checkers apply limited rules, so judge each suggestion. Check whether your course allows AI-based writing assistants, and how their use must be declared.

The 15-point checklist

Spelling and words

  1. Homophones: your/you're, their/there/they're, its/it's, affect/effect, principal/principle.
  2. Consistent spelling variety (British or American) throughout, as your course requires.
  3. Names of authors, theories and places spelled exactly as in your sources.
  4. No informal words, contractions or slang unless your discipline allows them.

Grammar and punctuation

  1. Run-on sentences and comma splices (two sentences joined only by a comma).
  2. Subject–verb agreement, especially after long phrases: "The impact of these policies is…".
  3. Apostrophes for possession (students' vs student's), none in plurals.
  4. Pronouns with a clear reference: what does "this" or "it" point to?
  5. Tense consistency, especially when describing studies or literary texts.

Style and clarity

  1. Filler phrases UNC flags: "there is", "there are", "due to the fact that".
  2. Overuse of the passive voice where it hides who did what.
  3. The same strong word repeated in neighbouring sentences.

Citations and format

  1. Every in-text citation has a matching reference entry, and vice versa.
  2. One citation style, one edition, applied consistently (APA, MLA or Chicago, as your course requires).
  3. Formatting as required: word count, headings, page numbers, file name, cover sheet.

Five errors in context

Comma splice. Before: "Rents rose sharply, many students moved further out." After: "Rents rose sharply, so many students moved further out." (or two sentences)

Agreement after a long phrase. Before: "The effect of rising rents on first-year students are clear." After: "The effect … is clear." (the subject is "effect")

Vague pronoun. Before: "Universities and landlords disagree, and this makes it worse." After: "Universities and landlords disagree, and this disagreement delays new housing."

Filler. Before: "Due to the fact that there are fewer rooms, prices rise." After: "Because rooms are scarce, prices rise."

Apostrophe. Before: "The student's union published it's report." After: "The students' union published its report."

Most errors cluster in the parts written last: check the conclusion and the paragraphs you rewrote at the end with extra care. If your argument itself still feels loose, go back to structure first; our argumentative essay guide and our advice on introductions and conclusions are the place to start.

Screen or paper?

UNC's advice is to use whichever medium helps you focus. Many writers find errors on paper that they missed on screen, because the change of format breaks familiarity. If you proofread on screen, enlarge the text, switch to a different font for the final pass, or use your computer's read-aloud function: hearing a synthetic voice read your sentences is an effective way to catch missing words and clumsy repetition. Whatever you choose, do the final pass on the exact file you will submit, after any last-minute changes.

A 30-minute final pass

  1. Minutes 0–5: check the brief: word count, format, file type.
  2. Minutes 5–15: read aloud, marking anything that sounds wrong.
  3. Minutes 15–25: targeted passes: homophones, apostrophes, citations.
  4. Minutes 25–30: references against in-text citations, then save and submit.

When to ask for help

Most universities run a writing centre or academic skills service that will go through a draft with you. They will not proofread it for you line by line; they will teach you to spot your own patterns of error, which is more useful. Ask early: appointments fill up before deadlines.

A note on integrity

Many universities set rules on proofreading by others: some allow a friend to point out errors but not to rewrite, and most require any substantial help to be declared. Read your institution's proofreading and academic integrity policy before asking anyone, or any tool, to edit your work.

Sources

More essay writing guides