When should my child start preparing for the Selective test?

The test is held in early May each year, and most families begin focused preparation 3–6 months out. Short, regular adaptive practice beats cramming: 20 minutes a day from November is far more effective than weekend marathons in April.

Built in Sydney for NSW Selective, OC & HAST families

Help your child practise the real test format with verified questions

Q: How do I know the questions and answers are correct?

Every question moves through a multi-stage verification pipeline before a child can ever see it: it is checked for structure, independently re-solved and cross-checked by multiple AI systems that must agree with the answer key, calibrated to the right year level and difficulty, and screened against every question already in the bank. Anything that fails any stage is quarantined and never served.

Q: Do you support the HAST (Higher Ability Selection Test)?

SelectMath supports HAST at the junior-secondary level (Year 6–7): Mathematical Reasoning, Reading and Abstract Reasoning, in the same computer-based multiple-choice style as the real test. We do not cover the middle or senior HAST levels, and Written Expression is out of scope because it needs human feedback.

SelectMath gives Year 4-6 students timed Mathematical Reasoning and Thinking Skills practice that adapts to their level, explains mistakes, and keeps parents in the loop.

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Free mock included Try the timed exam flow before paying.

No ads or chat A child-safe practice space built for focus.

$59.99/year Founding annual price, less than one tutoring session.

Built for the way families actually prepare

Short daily sessions, realistic timing, clear explanations, and progress parents can understand without becoming the tutor.

Verified before your child sees it

Questions are checked for structure, answer accuracy, difficulty, and duplication before they enter practice. If a question fails, it is quarantined instead of shown.

Adaptive difficulty engine

Practice adjusts to accuracy and speed, so students spend more time at the edge of their level instead of repeating work they already know.

The real exam format

Five options A-E, strict timing, progress indicators, and auto-submit behaviour help test day feel familiar instead of new and stressful.

Fresh practice without repeats

SelectMath Unlimited streams from a growing cloud question bank and tracks what a student has already attempted, keeping sessions useful over months.

Selective, OC & HAST specific

Content is built around NSW Selective High School, Opportunity Class and junior-secondary HAST preparation, not a generic overseas maths curriculum.

Parents stay in the loop

Accuracy, streaks, and topic breakdowns show where practice time is going and which weak areas deserve attention next.

Mistakes come back at the right time

Wrong answers return for review after 1, 3 and 7 days — spaced repetition built in. Reviews, retakes and mock exams never count against the daily question allowance.

One subscription, every device

With SelectMath Unlimited, an optional Sign in with Apple keeps the subscription and daily limit in sync across iPhone and iPad.

Works fully offline on the free tier

The free tier practises entirely from question sets stored on the device — no account, no connection, no card required.

How it works

From download to confident practice in five minutes.

Download free

The free tier includes a full mock exam per subject and a bundled question set that works offline. No sign-up required, no card.

Sit a free mock

Your child takes a timed, exam-format mock. You see their starting level and weak topics immediately.

Practise adaptively

SelectMath Unlimited unlocks the adaptive engine and fresh questions every day. Mini quests for daily practice, full mocks for exam rehearsal.

Watch progress

The parent portal tracks accuracy, streaks and topic mastery over the months leading up to the test.

Focused Selective & OC practice, for less than one week of tutoring.

Verified questions, adaptive difficulty, and realistic mock practice for less than one private tutoring session.

Free

1 x full mock exam per subject
Bundled practice set (works offline)
Real exam-format timer
No ads, kid-safe environment
Detailed answer explanations
Adaptive difficulty engine
Daily fresh questions
Parent progress portal

Unlimited Monthly

$14.99/mo

All Free features
Adaptive difficulty engine
100 fresh verified questions per day
Weekly mock exam — retake to track improvement
Detailed answer explanations
Full parent progress portal
Cancel anytime flexibility
Founding cohort 25% discount

Unlimited Annual

$59.99/yr

~~$79.99/yr~~ · Save 25%

All Free features
Adaptive difficulty engine
100 fresh verified questions per day
Weekly mock exam — retake to track improvement
Detailed answer explanations
Full parent progress portal
Locked-in 25% discount
Early access to new test features

Lock in the founding price

Prices in AUD, billed through the App Store. The founding annual price is locked in for early subscribers. Free trial converts automatically unless cancelled 24+ hours before it ends.

NSW Selective Test — what parents ask us

Straight answers about the test and the app.

What format is the NSW Selective High School Placement Test now?

Since 2025 the test is computer-based. Students answer multiple-choice questions with five options (A–E) under strict per-section time limits, and unanswered questions are auto-submitted when time expires. The test covers Reading, Mathematical Reasoning, Thinking Skills and Writing. SelectMath focuses on the two most coachable quantitative sections — Mathematical Reasoning and Thinking Skills — and replicates the real on-screen format, including the timer and auto-submit behaviour.

When should my child start preparing?

The test is held in early May each year, and most families begin focused preparation 3–6 months out — around the spring or summer before. Short, regular adaptive practice beats cramming: 20 minutes a day from November is far more effective than three-hour weekend marathons in April.

How do I know the questions and answers are actually correct?

Every question in SelectMath moves through a multi-stage verification pipeline before a child can ever see it: it is checked for structure, independently re-solved and cross-checked by multiple AI systems that must agree with the answer key, calibrated to the right year level and difficulty, and screened against every question already in the bank. Anything that fails any stage is quarantined and never served. If you ever spot an issue, every question has a one-tap report button and we review reports directly.

Is it safe for my child to use alone?

Yes. There are no ads, no chat, no social features and no external links in the child experience. Settings and purchases sit behind a parental gate (PIN or Face ID). Practice stats live on the device; unless a parent opts into Sign in with Apple, the cloud sees only anonymous identifiers.

Does it also help with the OC (Opportunity Class) test?

Yes — the OC placement test uses the same computer-based format and tests the same Mathematical Reasoning and Thinking Skills domains at a Year 4 level. The adaptive engine automatically meets your child at their level.

Do you support HAST (Higher Ability Selection Test)?

We support HAST at the junior-secondary level (Year 6–7) — Mathematical Reasoning, Reading and Abstract Reasoning, in the same computer-based multiple-choice style as the real test. We don't cover the middle or senior HAST levels, and Written Expression is out of scope because it needs human feedback.

What about Reading and Writing?

SelectMath includes a curated Reading Skills bonus set, but our depth is deliberately in the quantitative sections — Mathematical Reasoning and Thinking Skills — where systematic, adaptive practice moves scores the most. Writing needs human feedback, and we'd rather be the best at our lane than mediocre at four.