11+ Punctuation Rules Every Child Should Know

In short

• Apostrophes cause more 11+ punctuation errors than everything else combined, and nearly all of them come from confusing possession with omission.
• Commas do four distinct jobs, and knowing which job a comma is doing is more useful than any list of comma rules.
• Punctuating speech has a fixed pattern that can be learned in one sitting and is worth full marks whenever a paper includes writing.
• Semicolons and colons earn credit in extended writing but only when used correctly — one confident semicolon beats four hopeful ones.
• Examiners reward control rather than variety: correct simple punctuation scores better than ambitious punctuation used wrongly.

The short answer

Punctuation reaches the 11+ in two places: proofreading and error-spotting questions, where a child must identify a misplaced or missing mark, and the accuracy marks for extended writing in the papers that include it. In both, examiners are looking for control rather than range. A child who punctuates simple sentences accurately every time scores better than one who scatters semicolons and dashes hopefully. That is worth saying plainly because a lot of preparation pushes children toward ambitious punctuation before basic accuracy is secure, and it backfires. The territory that actually matters is small: apostrophes, the four jobs commas do, the fixed pattern for speech, and a working understanding of when a semicolon or colon genuinely helps. This guide covers each, along with the errors examiners see most. It pairs with our 11+ SPaG overview and the confusable-word set in our homophones guide.

Apostrophes: the single biggest source of marks lost

Almost every apostrophe error traces back to one confusion: the mark does two entirely unrelated jobs, and children conflate them. The first job is omission — the apostrophe stands in for missing letters, as in do not becoming don't or it is becoming it's. The second is possession — the apostrophe plus s shows that something belongs to someone, as in the girl's book. The trouble is that possession has its own sub-rules: a singular owner takes apostrophe s, a plural owner already ending in s takes only the apostrophe (the girls' books), and an irregular plural that does not end in s takes apostrophe s like a singular (the children's books). Then the exception that catches everyone: possessive pronouns never take an apostrophe at all, which is why its, yours, hers and theirs are correct without one. Teach the two jobs as genuinely separate ideas rather than as one topic, and most errors disappear.

Commas: the four jobs that matter

Comma rules are usually taught as a long list, which is why children forget them. It is more efficient to teach the four jobs a comma actually does. First, separating items in a list, which children already know. Second, marking off a subordinate clause at the start of a sentence — after the rain stopped, we went outside. Third, enclosing extra information in the middle of a sentence, where the test is whether the sentence still works if you lift the enclosed part out; if it does, it needs commas on both sides, and forgetting the closing one is a classic error. Fourth, separating two complete sentences joined by a conjunction such as and or but. Knowing which job a comma is doing lets a child check it, which a memorised list never does. The most common failure is the comma splice — joining two complete sentences with only a comma — and the fix is a full stop, a semicolon, or a conjunction.

Punctuating speech: a fixed pattern worth an easy mark

Speech punctuation is the most learnable topic in this whole article, because the pattern genuinely does not vary. Spoken words sit inside inverted commas. The punctuation that belongs to the spoken words goes inside those inverted commas, not outside. A new speaker starts a new line, indented. Where the speech is followed by a reporting clause such as he said, the speech ends with a comma rather than a full stop, unless it ends with a question mark or exclamation mark, which are kept. Where the reporting clause comes first, it is followed by a comma before the inverted commas open. That is the whole thing, and a child can learn it properly in a single sitting. It is worth doing precisely because it is finite and it recurs in every piece of narrative writing — which makes it high-value for papers with a written component, such as the Essex CSSE test covered in our CSSE guide. Our creative writing guide covers what else examiners reward in extended writing.

How much punctuation does an 11+ child actually need?

Less range than most parents assume, used more accurately than most children manage. The realistic target is full stops, capitals, question marks and exclamation marks used correctly without exception; commas doing all four of their jobs reliably; apostrophes correct for both omission and possession; and speech punctuated to the fixed pattern. That is the mark-bearing core. Semicolons, colons, dashes and brackets sit above it as genuine credit-earners in extended writing, but only when a child can use them deliberately. A single well-placed semicolon in a piece of writing signals control; four scattered ones signal that the child has been told semicolons are impressive. If time is limited, secure the core completely before touching the extras, because accuracy marks are lost to basic errors far more often than they are gained by ambitious ones.

What punctuation errors do examiners see most?

Five, in rough order. Missing or misplaced apostrophes, especially its versus it's and plural possessives. Comma splices, where two complete sentences are joined with a comma. Missing the second comma of an enclosing pair, which is easy to miss when proofreading your own work because the sentence still sounds right. Speech punctuation with the full stop outside the inverted commas or a missing comma before the reporting clause. And capital letters used inconsistently — dropped at the start of sentences when writing at speed, or added to common nouns for emphasis. The useful thing about that list is that it is short and stable, which means a child can proofread against it directly. Our proofreading technique guide covers how to run that check systematically inside a timed paper rather than hoping errors jump out.

Where GrammarPrep fits

GrammarPrep tests punctuation the way papers do — inside error-spotting and proofreading items rather than as abstract rule questions — and the adaptive engine tracks which of the five common error types a child keeps missing, so practice targets the actual weakness instead of cycling through punctuation generally. For families whose target schools include an extended-writing component, the writing strand gives feedback on accuracy alongside content. The free 15-minute diagnostic places a child across the English strands including SPaG.