OC Practice Tests 2027 — Free Online Mock Tests & Study Guide
Looking for OC practice tests? Every test on this page is free, follows the format of the NSW Opportunity Class Placement Test, and is attempted online — your child answers on screen, it is marked the moment they finish, and the correct answers are shown. The study guide underneath explains the test, what to study and how to use the practice tests in the months before the May test.
In the last round 13,200 children sat the OC test for 1,840 places, so a few extra marks make a real difference. Start with the Year 3 papers for early preparation and move to the Year 4 papers before the test.
Year 3
OC Practice Mock 1 — Mathematical Reasoning (Year 3, early preparation)
OC Practice Mock 1 — Reading (Year 3, early preparation)
OC Practice Mock 1 — Thinking Skills (Year 3, early preparation)
Year 4
OC Mock Test 1 — Mathematical Reasoning (Year 4)
OC Mock Test 1 — Reading (Year 4)
OC Mock Test 1 — Thinking Skills (Year 4)
NSW OC study guide
What is in the OC test
The Opportunity Class Placement Test is a computer-based test with three sections, all multiple choice: Reading (14 questions, some with several parts, 40 minutes), Mathematical Reasoning (35 questions with five options each, 40 minutes) and Thinking Skills (30 questions with four options each, 30 minutes) — 110 minutes in all, sat in Year 4 for entry to Year 5. There is no penalty for a wrong answer, so every question should be attempted.
Key dates for 2027 entry
Applications open in November 2026 and close in February 2027; the test is sat in May 2027 and outcomes are released from August. Mathkari Concepts is independent of the Department of Education — always confirm dates on the Department’s website.
What to study
Reading: finding information, working out word meanings from context, following an argument, comparing texts and understanding poems and factual passages. Mathematical Reasoning: place value, the four operations, fractions and decimals, patterns, measurement, time, data, chance and multi-step word problems — all a year or so beyond classroom level. Thinking Skills: logical deduction, spotting the assumption or flaw in an argument, spatial reasoning and puzzles with rules.
How to use these practice tests
Do one section at a time under its real time limit, with no help. When it is marked, go through every wrong answer and work out why the right one is right — that review is where the learning happens. Keep a note of the question types that keep going wrong and practise those. A test a week from February, mixed with reading every day, is plenty; cramming in the last fortnight is not.
Is this the official practice test?
No. The NSW Department of Education publishes one official sample test on its website, and you should do that too. The tests here are original Mathkari Concepts papers in the same format, so your child gets more than one attempt at each section.
Questions parents ask
How many questions are in the OC test?
Reading has 14 questions (three with multiple parts) in 40 minutes, Mathematical Reasoning 35 questions in 40 minutes and Thinking Skills 30 questions in 30 minutes. All are multiple choice and answered on a computer at a test centre.
When should my child start preparing for the OC test?
Most families start 6–9 months before the test (the test is usually in May, with applications opening the previous November). Regular short practice — a paper a week with the mistakes reviewed — works better than cramming.
Are these the official OC test papers?
No. The NSW Department of Education publishes one sample test. These are original Mathkari Concepts practice papers that follow the same structure, timing and question styles.
Are the OC practice tests really free?
Yes. The first three questions of each test are open to everyone; before the first full test on a device we send a one-time WhatsApp code to a parent, and after that every test opens straight away.
Want your child to practise with expert guidance?
Live one-to-one classes with a qualified teacher, in your time zone. The first lesson is a demo class.