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NSW Opportunity Class

OC Past Papers & Practice Tests

There are no publicly released past OC test papers — NSW does not publish them. The official source is the NSW Department of Education's OC practice test. Below is the exact OC test format, free OC-style sample questions with worked answers, and how to practise the real question types.

Official practice test: NSW Department of Education — Opportunity Classes

The free official practice test matches the real computer-based test interface. Use it to get familiar with the format, then practise the question types below.

OC test format

The OC Placement Test is computer-based and takes about 1 hour 50 minutes. No writing component. Placement combines the test result with a school-provided assessment score; the Department does not publish a per-component weighting.

Reading — 40 min, 14 questions (33 answers)
Mathematical Reasoning — 40 min, 35 questions (5-option multiple choice)
Thinking Skills — 30 min, 30 questions (4-option multiple choice)

Free OC sample questions

OC-style questions at Year 4 level. Try each, then reveal the worked answer.

Mathematical Reasoning · Sample 1

A bag contains 3 red, 4 blue, and 5 green marbles. If one marble is chosen at random, what is the probability it is NOT red?

  • A. 1/4
  • B. 3/4
  • C. 1/3
  • D. 2/3
Show answer & explanation

Answer: B — 3/4

There are 12 marbles total. Non-red = 4 + 5 = 9. Probability = 9/12 = 3/4.

Reading · Sample 2

The lyrebird is one of Australia's most remarkable birds. Males can mimic almost any sound they hear — from chainsaws to camera shutters to other birds' calls. This ability evolved to attract mates, not to entertain humans.

According to the passage, why did the lyrebird develop its mimicry ability?

  • A. To entertain other animals in the forest
  • B. To warn other birds of predators
  • C. To attract a mate
  • D. To communicate with humans
Show answer & explanation

Answer: C — To attract a mate

The passage explicitly states "This ability evolved to attract mates."

Thinking Skills · Sample 3

Which number comes next in the sequence? 2, 6, 12, 20, 30, __

  • A. 38
  • B. 40
  • C. 42
  • D. 44
Show answer & explanation

Answer: C — 42

Differences are +4, +6, +8, +10, +12. Next term = 30 + 12 = 42.

Thinking Skills · Sample 4

If all Blips are Glops, and some Glops are Flips, which statement MUST be true?

  • A. All Blips are Flips
  • B. Some Blips might be Flips
  • C. No Blips are Flips
  • D. All Flips are Blips
Show answer & explanation

Answer: B — Some Blips might be Flips

Since all Blips are Glops, and some Glops are Flips, it's possible (but not certain) that some Blips are also Flips.

Practise the real OC question types

Get a free, scored readiness check, then practise hundreds of OC-style questions with step-by-step coaching hints.

Free readiness checkSee practice plans

Related guides

Selective past papersNAPLAN practice papersOC vs SelectiveThinking Skills testKey datesOC & Selective guide →

Frequently asked questions

Are there official OC past papers?
No. The NSW Department of Education does not release past Opportunity Class placement test papers. The only official practice material is the OC practice test on the NSW DoE website, which mirrors the real test format and software.
Where can I find OC practice tests?
The NSW Department of Education publishes a free official OC practice test (computer-based, matching the real test interface) on its Opportunity Classes page. Beyond that, the most useful preparation is practising the exact question types — Reading, Mathematical Reasoning, and Thinking Skills.
How many questions are in the OC test?
The OC Placement Test is computer-based and about 1 hour 50 minutes: Reading (40 min, 14 questions / 33 answers), Mathematical Reasoning (40 min, 35 questions), and Thinking Skills (30 min, 30 questions). There is no writing component.
What year do students sit the OC test?
Students sit the OC Placement Test in Year 4, for entry into an Opportunity Class in Years 5 and 6.
Is the OC test multiple choice?
Yes. All three sections are multiple choice — Mathematical Reasoning uses 5 options and Thinking Skills uses 4 options. Placement also combines the test result with a school-provided assessment score.