Guides · OC vs Selective
OC vs Selective: what's the difference?
OC and Selective are two different tests for two different things. The Opportunity Class (OC) Placement Test is sat in Year 4, for entry to a Year 5–6 opportunity class inside a regular primary school. The Selective High School Placement Test is sat in Year 6, for entry to a dedicated selective high school the following year, in Year 7. They're independent applications, independent tests, sat two years apart — and the most ambitious families we hear from generally attempt both.
Side by side
One table, the dimensions that matter when you are deciding whether to prepare for one, the other, or both.
| Dimension | OC | Selective |
|---|---|---|
| Year sat → entry year | Year 4 → Year 5 (a 2-year program, Year 5–6) | Year 6 → Year 7 |
| Sections | Reading: 14Q (33 answers), 40 min Maths: 35Q, 40 min Thinking Skills: 30Q, 30 min No Writing section | Reading: 17Q, 45 min Maths: 35Q, 40 min Thinking Skills: 40Q, 40 min Writing: 1 task, 30 min |
| Total test time | ~110 min | ~155 min |
| Options per question | Maths: 5 · Thinking Skills: 4 | Maths: 5 · Thinking Skills: 4 |
| 2025 odds (apps : places) | 13,263 : 1,840 — 7.2 per place | 17,559 : 4,227 — 4.2 per place |
| Settings/schools | 89 OC settings (57 metro, 31 regional, plus Aurora College online) | ~47 selective high schools (fully, partially, and agricultural selective, plus Aurora College online) |
| Delivery | Computer-based, via Janison, since 2025 | Computer-based, via Janison, since 2025 |
| Equity model & gender rule | Equity Placement Model (up to 20% of places); equal boys/girls places from 2027 entry | Equity Placement Model (up to 20% of places); equal boys/girls places from 2027 entry |
Sources: Get ready for the OC Placement Test, Selective placement test, Opportunity classes (Year 5–6), Selective high schools, and Dr Michele Bruniges AM, Independent Review of the 2025 Opportunity Class and Selective High School Placement Testing, Appendix 3 (accessed 9 July 2026). School counts move slightly year to year as individual schools change selective status — 47 is the figure tied to the 2025 application round above.
Is OC harder than Selective?
It depends what you mean by "harder," and the honest answer runs in two different directions at once.
The content is easier at OC, by design — it's pitched at what a Year 4 student has covered, against a Year 6 curriculum for Selective. A given Reading passage or Maths question at OC is simply written for a younger reader than its Selective counterpart.
The selectivity runs the other way. In 2025, OC drew 7.2 applicants for every place on offer; Selective drew 4.2. Fewer OC places exist state-wide (1,840, frozen since 2021) against a similarly sized applicant pool to Selective's much larger one (4,227 places in 2025) — so on a place-for-applicant basis, OC is the harder one to win.
Neither the Department nor any independent body publishes a rubric that scores the two tests against one another on a single difficulty scale, and we're not going to invent one. "Easier content, harsher odds" is the most accurate summary we can stand behind.
Does OC feed into Selective?
No — not automatically, and not by any Department mechanism. OC placement and Selective placement are entirely separate applications and entirely separate tests, sat two years apart. A student who wins an OC place still has to apply for Selective from scratch in Year 6, sit the Selective test like every other applicant, and compete on that test's own rank. Equally, a student who misses out on OC — or never applies at all — starts the Selective process with a completely clean slate; nothing about an earlier OC outcome follows them into it.
The OC Placement Test guide → covers the OC process end to end, the way our NSW Selective Test guide does for Selective. If you are checking when either test falls, the full key-dates guide → tracks both timelines side by side.
Where our papers fit
Our practice papers today are calibrated to the Selective test — Year 6 Mathematical Reasoning and Thinking Skills, matched to the real question counts and timing. OC-specific papers, pitched at the Year 4 curriculum and the OC section structure above, are in development and not yet published. If you're preparing for OC in the meantime, a free Selective paper in each subject still gives your child a real look at the on-screen test experience — the timer, the flag button, the question layout — even though the content sits a level ahead. Browse the full catalogue →.
Frequently asked
Questions parents ask.
Can my child go straight for Selective without sitting OC first?
Yes. There's no prerequisite either way — OC and Selective run as two completely independent application and testing processes, two years apart. Plenty of families skip OC entirely and apply for Selective in Year 6 for the first time.
Is OC easier to get into than Selective, since the content is younger?
Not necessarily, and it's the wrong comparison to make on content alone. OC content matches a Year 4 curriculum, so an individual question is easier than its Year 6 Selective equivalent — but OC drew 7.2 applicants for every place in 2025, against 4.2 for Selective. Neither the Department nor anyone else publishes a rubric that scores the two tests against each other on a single difficulty scale, so we won't invent one.
If my child misses out on OC, does that count against them at Selective?
No. The Department treats them as entirely separate placement rounds with entirely separate results — nothing about an OC outcome, offer, reserve band or miss follows a student into the Selective application two years later.