What Year 3 NAPLAN Conventions of Language actually tests
Conventions of Language is the NAPLAN test most parents have never heard the name of, because nobody calls it that at home. It is the spelling, grammar and punctuation test, sat on screen, and for most Year 3 children it is their first time meeting these skills outside their own exercise book.
The good news is that nothing on it is a surprise topic. Every question is built from spelling, grammar and punctuation an ordinary Year 3 classroom already covers. What catches families out is the FORMAT: finding one wrong word inside a sentence, or picking the one correctly punctuated option out of four, is a different skill from writing correctly in your own work, and it rewards a bit of familiarity before test day.
What does Year 3 Conventions of Language cover?
| Topic | What it looks like at this year level |
|---|---|
| Spelling | Mostly proofreading: finding and correcting one misspelled word in a sentence, built from Common misspellings, Homophones and Plurals your child already uses in their own writing. |
| Grammar | Simple sentence-level choices: matching a verb to its subject (Subject–verb agreement), keeping one tense across a sentence (Tense consistency), and naming Parts of speech in sentences your child could plausibly have written themselves. |
| Punctuation | The marks your child already uses daily: End punctuation, Capitalisation of names and places, and Apostrophes for simple ownership, like Kim's bike. |
Conventions of Language is online and adaptive from this first sitting onward, at every year level, not just the later ones: how your child answers the early questions decides whether the later ones get harder or easier. The other thing worth knowing before test day is that spelling is never tested by reading a word aloud and asking your child to write it down. Every spelling question is proofreading: a sentence appears with one wrong word already sitting in it, and your child has to find and fix it. That is a genuinely different skill from a spelling list at home, and it is worth practising the format itself.
A short diagnostic shows you exactly which of spelling, grammar or punctuation needs the most attention before test day.
Get startedSample Year 3 Conventions of Language questions
These are original questions written in the style of NAPLAN. Real test questions are ACARA copyright and are not published for practice use.
Spelling
One word in this sentence is spelled incorrectly. Write the word correctly. We went to the beach becuase it was hot.
Answer: because
Common-misspellings items at Year 3 use words your child already reads and writes every week, not unfamiliar vocabulary.
Spelling
One word in this sentence is spelled incorrectly. Write the word correctly. There were three babys asleep in the shade.
Answer: babies
A word ending in a consonant plus y makes its plural with -ies, so baby becomes babies. Children who have only memorised "add an s" miss this one.
Grammar
Which word correctly completes the sentence? The two cats ____ under the table.
Answer: are
"Two cats" is a plural subject, so it takes the plural verb "are", not "is" or "was".
Punctuation
Which sentence uses the apostrophe correctly?
Answer: That is Kim's bike.
One person, Kim, owns the bike, so the apostrophe sits before the s. This is the simplest form of the Apostrophes rule, and it is the one Year 3 tests first.
Common Year 3 conventions mistakes
Spells tricky words by sound alone
Writes a word exactly as it sounds, producing errors such as "becuase" or "seperate", because the word is being sounded out rather than recalled.
Fix
Teach the word through its family instead of its sound: "because" is easier to hold onto once a child has said and written it inside a short phrase a few times, with the tricky letters said aloud slowly as they are written.
Adds s straight onto a y-ending plural
Pluralises a word ending in y by adding s alone, writing "babys", "storys" or "partys" instead of changing the y to i.
Fix
Teach the one check that decides it: is there a consonant right before the y? If yes, swap y for i and add es. Sorting a short mixed list of boy/boys against baby/babies makes the pattern visible rather than rule-of-thumb.
Thinks an s on the verb means a plural subject
Matches an s on the verb to a plural noun, writing things like "the dogs barks" or "the boy run", swapping which word the s belongs on.
Fix
Teach it as a trade: in the present tense, the s sits on the noun or the verb, never both. A few quick spoken pairs, "the dog barks" against "the dogs bark", builds the ear for it faster than a written rule does.
Confuses its and it's
Uses "it's" to show ownership, or drops the apostrophe from the contraction, writing "the dog wagged it's tail".
Fix
Teach the swap-in test: if "it is" fits in the sentence, write it's. If it does not, the possessive its takes no apostrophe at all, exactly like his or hers.
How to practise for Year 3 Conventions of Language
At this age, the single most useful thing to practise is proofreading itself: reading a whole sentence slowly, out loud if it helps, rather than scanning it for one word that looks wrong. Most Year 3 marks are lost to a rushed skim, not a genuine gap in knowledge.
Keep spelling practice tied to words your child actually uses in their own writing, since that is exactly where the test draws from. A short list of the words they misspell in their own stories is worth more than a generic word list.
Because the test is online and adaptive, a few short practice sessions on a screen, rather than one long session on paper, gets your child used to reading questions and choosing answers in the format they will actually meet.
When is the Year 3 NAPLAN in 2027?
The 2027 window is Wednesday 10 March to Monday 22 March 2027. Schools schedule the four tests inside that window, and Writing has to be scheduled for the first day. Most schools finish in the first week, so confirm the exact days with your school rather than a national site.
On the day, Conventions of Language at Year 3 runs for 45 minutes.
Test structure, marking and reporting facts on this page come from ACARA's public NAPLAN documentation, checked against nap.edu.au in August 2026.
Find the Year 3 Conventions of Language gaps now, not on test day
Conventions of Language rewards familiarity with the format more than it rewards new knowledge, and that familiarity is free to build now.