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New South Wales · Year 4 entry · Years 5–6 placement · NSW Department of Education

NSW Opportunity Class (OC) Test Preparation for Year 4 Students

NSW Opportunity Class (OC) Test preparation for Year 4 students seeking placement into one of approximately 80 academically selective Year 5–6 classes across New South Wales. Coverage spans the three computer-based components — Reading, Mathematical Reasoning and Thinking Skills — delivered by the NSW Department of Education.

By Braintree Editorial, Exam preparation editors, Braintree Coaching Australia

Reviewed by Braintree Academic Panel on

Last updated

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~80 OC schools across NSW · Year 4 to Year 5 entry · computer-based · free to sit

What we observed in the 2025 OC coaching cohort

In the 2025 OC cohort we coached through the July 2025 sitting, students who followed our ten-to-fourteen timed mock schedule entered test week with fewer on-screen format surprises in tutor follow-up than families who ran only one or two full mocks (programme observation from mock-review logs; not a placement guarantee).

Source: Braintree Coaching Australia tutor records (2025). Tutor mock-review logs and published OC mock schedule; Debrief 1 2026-07-01.

Mock test packs

OC practice packs — timed papers, marked on the LMS.

Featured: Super Pack · Opportunity Class · from $300

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About the exam

The OC test, in plain language.

The Opportunity Class (OC) Test is run by the NSW Department of Education to identify academically capable Year 4 students for two years of accelerated, gifted-and-talented placement in Year 5 and Year 6 at one of approximately 80 designated OC schools across the state. Unlike selective high school entry, OC is delivered inside the regular public-primary system at no additional tuition cost.

OC is a single-sitting computer-based test held on one day in late July. Year 4 students complete three timed sections — Reading, Mathematical Reasoning and Thinking Skills — each weighted at 33.3 per cent of the total. Applications run through the NSW Department of Education online portal, opening in early May and closing in late June. Families nominate up to five preferred OC schools in genuine order of preference, and placement is matched by the Department's algorithm against test rank and preference order. Results are released approximately 6 to 8 weeks after the test (mid-September), with offers, reserve-list placement or unsuccessful notification delivered through the portal.

Test dates

The OC Test is held on one day in late July each year, with applications opening through the NSW Department of Education portal in early May and closing in late June. Exact dates are confirmed by the Department in March or April. Results are released in mid- September and offers must be accepted within the published window (typically one to two weeks). There are no make-up sittings — if a student misses the test for any reason, the family must wait until the following year, provided the student is still in Year 4.

Scoring & cutoffs

OC Test results are not released as raw or scaled numerical scores. Families receive one of three outcomes: an offer to a specific OC school, placement on the reserve list for a nominated school, or an unsuccessful notification. Competitive performance typically means ranking in the top 10 to 15 per cent of the candidate cohort state-wide, though the practical cut-off varies by region and preferred school — metropolitan Sydney schools are materially more competitive than regional centres. Performance is composite across the three sections, each weighted equally at 33.3 per cent.

  • Reading

    40 min14 (with 3 multi-part)

    Multiple-choice items spanning fiction, non-fiction and poetry pitched at Year 4–5 reading level. Tests inference, vocabulary in context, main idea and text evaluation. Three of the 14 questions contain multiple sub-parts to answer.

  • Mathematical Reasoning

    40 min~40–45

    Multiple-choice problem-solving across number, pattern, arithmetic, geometry and data interpretation. Calculators are not permitted. Pitched at Year 4–5 curriculum with applied reasoning rather than rote recall.

  • Thinking Skills

    40 min~40–50

    Logical reasoning, pattern recognition, abstract thinking and spatial reasoning. The most novel section for most Year 4 students because it does not map directly to school curriculum; familiarity with the format is the single biggest score lever.

Mock test packs

OC mock packs, currently on sale.

Self-paced practice papers, with writing marked on the BrainTree LMS within 24 hours. Buy once, sit whenever — every pack ships with cohort percentiles and section-level feedback.

OC results and parent testimonial

“Our son sat the OC Test in July at the end of Year 4. The structured six-month plan — weekly computer-based mocks, daily Thinking Skills practice and timed Mathematical Reasoning sets — meant the on-screen format felt familiar. He received a placement offer in September.”

Wendy L.

Parent, Year 4 student (Sydney, NSW)

How to prepare for the NSW OC test across six to twelve months

Use this three-phase runway when you move from understanding what an OC class is to sitting full timed mocks before the May 2026 sitting for 2027 entry.

  1. Foundations (months 1 to 3). Wide reading across fiction, non-fiction and poetry to build comprehension and vocabulary at Year 4–5 level. Daily mental-math fluency — around ten short problems — to build calculator-free arithmetic confidence. Weekly exposure to thinking-skills puzzles, sequences, matrices and spatial reasoning.
  2. Section practice (months 4 to 8). Weekly timed sets in each of the three sections under computer-based conditions, with structured error analysis. The key lever is understanding why an incorrect answer was incorrect — a misread instruction, a pacing error, a content gap or a careless click — rather than chasing the next correct answer.
  3. Full mocks (final 8 weeks). Fortnightly to weekly full-length mock papers under exam timing, on a computer rather than on paper. The goal is stable pacing across the three 40-minute sections and test-day endurance for the full 3.5–4 hour on-site experience.
FAQ

OC, plainly answered.

Five questions our faculty fields most often about the OC exam.

The NSW Opportunity Class (OC) Test is a computer-based assessment delivered by the NSW Department of Education to Year 4 students seeking placement into academically selective Year 5 and Year 6 classes at one of approximately 80 designated OC schools across the state. The test has three equally weighted sections — Reading, Mathematical Reasoning and Thinking Skills — totalling about two hours of testing time on a single day in late July, with results released in mid-September. OC placement provides two years of accelerated curriculum inside the NSW public primary system at no additional tuition cost.

Only Year 4 students enrolled in an Australian school during the application period may sit the OC Test, for entry into Year 5 the following year. Students cannot sit early in Year 3, and there are no provisions for acceleration. Applications open through the NSW Department of Education portal in early May, close in late June, and the test itself is held on one day in late July. Results follow approximately 6 to 8 weeks later, in mid-September. There are no make-up sittings; missing the published test date means waiting a full year to apply.

The OC Test has three equally weighted sections, each lasting 40 minutes. Reading runs 14 multiple-choice questions (three contain multiple sub-parts) across fiction, non-fiction and poetry at Year 4–5 reading level. Mathematical Reasoning runs approximately 40 to 45 multiple-choice problems across number, pattern, arithmetic, geometry and data interpretation, without calculators. Thinking Skills runs approximately 40 to 50 multiple-choice items in logical reasoning, pattern recognition, abstract thinking and spatial reasoning. There is no writing section. Total testing time is about two hours, with on-site time of 3.5 to 4 hours including instructions and short breaks.

The OC Test itself is free. The NSW Department of Education charges no application fee and no sitting fee. Families typically invest only in preparation materials and, where they choose to, coaching. The free baseline includes official sample tests published on the Department's website, which are the source-of-truth format and timing benchmark for any preparation program.

Approximately 3,600 OC places are offered each year across roughly 80 designated OC schools — most concentrated in metropolitan Sydney, with smaller numbers in regional NSW. Roughly 12,000 to 14,000 Year 4 students sit the OC Test annually. Placement is made by an automated algorithm: each student is offered their highest-preference school for which they qualify, given their composite test rank and the number of places available at that school. Families nominate up to five preferences in genuine order; the algorithm cannot deviate from the listed preferences, so the order matters.

Competitive performance typically means ranking in the top 10 to 15 per cent of the candidate cohort statewide, with the most contested metropolitan Sydney OC schools requiring performance closer to the top 5 per cent of candidates. The exact practical cut-off varies year-to-year with cohort strength and by individual school. Performance is composite across the three sections, each weighted equally at 33.3 per cent — a balanced profile across Reading, Mathematical Reasoning and Thinking Skills is more competitive than a single peaking section.

Most successful candidates prepare across 6 to 12 months. Starting in Term 3 or Term 4 of Year 3 (July to December) provides about a full year for gradual skill development without time pressure. Starting in Term 1 of Year 4 (February to March) provides about six months — enough for focused preparation if foundational reading and number fluency are already strong. Earlier starts (early Year 3 or Year 2) are generally unnecessary and risk burnout this far ahead of the test. Consistent weekly practice over months beats short intensive cramming.

Yes. The NSW Department of Education provides reasonable adjustments for students with documented disabilities or specific learning needs. Available provisions include additional time (typically pro-rata extra minutes per section), supervised rest breaks, alternative formats, assistive technology such as screen readers, separate testing rooms, and reader or scribe support where required. Provisions are applied for at the time of application through the online portal and require supporting evidence — most commonly a current Individual Education Plan, Learning Support Plan or specialist report. Provisions aim to provide fair access while preserving the integrity of the test.

OC is the Year 4 entry test for two years of accelerated Year 5 and Year 6 placement inside NSW public primary schools. The NSW Selective High Schools Test is the Year 6 entry test for six years of full-time selective Year 7 to Year 12 placement across the state's 47 fully and partially selective high schools. OC has approximately 3,600 places at around 80 primary schools; Selective has approximately 4,248 places. Both tests are computer-based and use multiple-choice items, but Selective adds a writing component the OC Test does not have. Many families pursue both pathways: a successful OC outcome is a strong preparation pathway for the Selective Test two years later.

Effective OC preparation usually runs across six to twelve months and moves through three phases. Foundations (months 1 to 3) — wide reading across fiction, non-fiction and poetry to build comprehension and vocabulary, daily mental-math fluency, and weekly exposure to thinking-skills puzzles and matrices. Component practice (months 4 to 8) — weekly timed sets in each of the three sections under computer-based conditions, with structured error analysis on incorrect answers and review of pacing across the 40-minute window. Full mocks (final 8 weeks) — fortnightly to weekly full-length mock papers under exam timing, focused on stable pacing rather than score-chasing. Computer-based practice matters specifically because the test itself is computer-based; paper-only preparation transfers less cleanly than families assume.

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