By Jon Petruch · Official details checked 21 October 2026
The OC test is the NSW Opportunity Class Placement Test, which Year 4 students sit for a place in a Year 5 opportunity class. It's a computer-based test with three multiple-choice sections (Reading, Mathematical Reasoning and Thinking Skills) and no writing task. This guide covers what's in each section, how long it takes, what happens on the day and how places are offered, with every detail checked against the NSW Department of Education.
What is an opportunity class, and what does OC stand for?
OC stands for opportunity class: a full-time Year 5 and 6 class in a NSW public primary school for high potential and gifted students. It's a two-year program, so families apply for Year 5 entry only, and the NSW Department of Education says parents can't apply for Year 6 alone.
Opportunity classes move through the curriculum faster and in more depth than a regular class. In most cases a child who accepts a place leaves their current school, and you can apply for opportunity classes outside your local enrolment area.
Who sits the OC test?
Children sit the OC test in Year 4, for entry to Year 5 the following year. Parents apply when their child is at the end of Year 3 or the start of Year 4, and applications are open for about four months, from November to the following February.
For many children this is their first formal test, at an unfamiliar school, with students they don't know. That matters more than most parents expect, and we come back to it below.
What is in the OC test?
The OC test has three sections, each worth one third of the result, and every question is answered on a computer. These are the official section details:
| Section | Questions | Time | Answer options | Weighting |
|---|---|---|---|---|
| Reading | 14 (3 have multiple parts, 33 answers in total) | 40 minutes | Multiple choice | 33.3% |
| Mathematical Reasoning | 35 | 40 minutes | 5 options per question | 33.3% |
| Thinking Skills | 30 | 30 minutes | 4 options per question | 33.3% |
Some older guides give different numbers, such as 25 Reading questions in 30 minutes, so go by the official figures above. The department also notes that its PDF practice tests come from older paper-based versions and don't reflect the current format.
The department says the questions draw on the NSW curriculum up to Year 4. Children can't use a calculator in any section, but they get two A4 sheets of paper for working out.
How long does the OC test go for?
The OC test runs for 110 minutes of test time: 40 minutes of Reading, 40 of Mathematical Reasoning and 30 of Thinking Skills. With check-in and two 10-minute breaks, the department's example timetable runs from 9:30 am to 12:35 pm.
Children stay in the test room during the short breaks. Thinking Skills comes last, when they've already done 80 minutes of concentrated work.
Is there a writing test in the OC test?
No. Every question in the OC test is multiple choice, so there is no writing section.
Writing is part of the Selective High School Placement Test for Year 7 entry, which adds a 30-minute writing test to the same three sections. If you've been reading about selective prep, that's where the writing advice belongs.
What is in the Thinking Skills section?
Thinking Skills tests critical thinking and problem solving: 30 questions in 30 minutes, with four options each. The department says no previous knowledge is needed, and it also says coaching is not necessary because the test needs no new or special knowledge.
From Jon: The department's position makes sense on its own terms: the test is designed to measure where a child already is, not what they've been drilled on. But in my experience, NSW primary schools don't necessarily teach the logic skills that Thinking Skills questions rely on. They aren't a subject with a name, a unit or a lesson. So a child can be strong in class and still meet this question style for the first time on test day, under a one-minute-per-question clock.
That's the gap the department's own practice tests are there to close. It provides free online practice tests that copy the real test software, so children know the question types and the timer before the day. No preparation product can guarantee a place, and we don't claim ours will. What practice can do is make sure the format isn't the thing your child is meeting for the first time. Our guide to critical thinking in reading covers how some of these reasoning skills show up in reading questions too.
How are OC test results used to offer places?
Places are offered on test performance and the order of your school choices. There's no published cut-off, because the department says the level needed at each school depends on how many students apply, how they perform, how many places there are and how many offers are declined.
You get one offer at most when outcomes are first released, from your highest-choice school your child qualified for. Children can also go on reserve lists for higher-choice schools. Up to 20% of places at each school are held under the Equity Placement Model, and those students still receive offers based on their test performance.
You won't get a test score. The performance report places your child in one of four bands for each section: top 10%, next 15%, next 25% or lowest 50% of candidates. For 2027 entry, outcomes were expected on 9 September 2026.
How many OC classes are there in NSW?
There are 89 opportunity classes in NSW: 57 schools in metropolitan Sydney, 31 in rural or regional centres, and Aurora College's online classes for rural and remote students. Across them, the department lists 1,840 Year 5 places for 2027 entry.
Most schools take 15 or 30 Year 5 students. From 2027, places at each class are split evenly between girls and boys, with any remaining place filled on merit.
What should my child bring to the OC test?
Your child needs a printed Test Admission Ticket, two 2B pencils, an eraser, a sharpener and a clear bottle of water, and must wear school uniform even on a Saturday. The official test day checklist bans pens, rulers, calculators, pencil cases, phones and smart watches.
A digital ticket on a phone isn't accepted. You'll get the ticket through your application dashboard about two weeks before the test, and it shows your child's test centre, date and time. All students from one primary school sit on the same day, so keep both test days free until the ticket arrives.
Is OC harder than selective?
They're different tests, not harder and easier versions of one. The OC test is sat in Year 4 with three sections and no writing, while the selective test is sat in Year 6 and adds a writing section.
The competition differs too. The department's outcomes guidance says about one in eight students gets an opportunity class place, compared with about a quarter for selective high schools. Our NSW Selective practice tests cover the Year 6 test, including writing.
How should my child prepare for the OC test?
Start with the department's free online practice tests, because they use the real test software and show your child the timer and question types. Beyond that, keep it light: the department warns that too much coaching can harm wellbeing, and it asks that children keep attending school normally before the test.
If you want more timed practice than the official set offers, our OC practice tests are 24 independent, exam-style tests built for Year 4 sitters, with worked explanations and a parent-friendly report. You can see a sample before paying.