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Opportunity Class Practice Tests

Support students usually preparing in Year 4 for NSW Opportunity Class entry with free sample questions and answers, original online practice and clear answer review.

Try nine OC sample questions

No account is needed. Read each question, choose an answer, then open the explanation to compare your reasoning.

These short, original examples introduce methods in each subject. They are independent practice, not official questions or a full-length test.

Reading

Question 1: Inference from clues

At the school fair, Nia stood behind a tray of seedlings. She had written each plant's name in tiny letters. Visitors leaned forward, then walked on. Nia replaced the labels with larger ones. Soon a visitor pointed to a label and asked to buy a plant.

Why did Nia most likely replace the labels?

  1. To show that the plants had become more expensive.
  2. To make the plant names easier for visitors to read.
  3. To help the seedlings grow more quickly.
  4. To tell visitors that only large plants were for sale.
Show answer and explanation for Reading question 1: Inference from clues

Answer: B. To make the plant names easier for visitors to read.

Link the clues: the letters were tiny, and visitors leaned forward. This suggests that the names were difficult to read. Replacing the labels with larger ones addresses that problem.

The visitor pointing to a label afterwards supports this reading. It does not prove that larger labels always lead to more sales; the question asks for Nia's most likely reason in this passage.

Why the other options do not work
  • A. The passage mentions plant names on the labels, not prices or a price increase.
  • C. Changing a label does not help a plant grow, and the passage gives no evidence of a growth problem.
  • D. The labels became larger. The passage does not say the size or selection of plants changed.
Practise finding evidence in the OC Reading guide

Question 2: Inference about character

When the rain stopped, Sam hurried outside to check the new garden bed. Water still pooled beside it. He fetched a spade, then paused. Instead of digging straight away, he drew a line in the damp soil and watched where a small cup of water flowed.

What does Sam's action suggest about his approach to the problem?

  1. He wants to test an idea before changing the garden.
  2. He has decided the garden needs no changes.
  3. He is trying to fill the garden bed with water.
  4. He knows exactly where to dig already.
Show answer and explanation for Reading question 2: Inference about character

Answer: A. He wants to test an idea before changing the garden.

Sam notices a problem and takes out a spade, but pauses to observe the path of a small amount of water. This suggests he wants information before acting.

The passage does not establish his final decision or show that he intends to fill the bed.

Why the other options do not work
  • B. He is still investigating the pooled water; the passage does not say he has decided to leave it.
  • C. He pours a small cup to observe its path, not to fill the bed.
  • D. His pause to watch the water suggests he is checking where it goes, not that the passage establishes he already knows.
Practise finding evidence in the OC Reading guide

Question 3: Purpose of wording

A sign beside a walking track reads: 'Young trees are growing here. Please stay on the path so their roots have room to spread.'

Why does the sign mention the trees' roots?

  1. To explain why walkers are asked to stay on the path.
  2. To tell walkers where to collect young trees.
  3. To warn that the path will soon be closed.
  4. To describe how tall the trees are now.
Show answer and explanation for Reading question 3: Purpose of wording

Answer: A. To explain why walkers are asked to stay on the path.

The word 'so' connects the requested action with its purpose: staying on the path gives the roots room to spread.

The sign does not discuss collecting trees, closing the path or measuring height.

Why the other options do not work
  • B. The sign asks walkers to stay on the path; it does not invite them to collect trees.
  • C. No closure is mentioned; walkers are asked to use the path.
  • D. Roots spreading underground do not state the trees' present height.
Practise finding evidence in the OC Reading guide

Mathematical Reasoning

Question 1: Multi-step grouping

There are 6 tables with 4 chairs at each table. After 5 chairs are taken to another room, the remaining chairs are placed in rows of 3. How many complete rows can be made?

  1. 5
  2. 6
  3. 7
  4. 8
Show answer and explanation for Mathematical Reasoning question 1: Multi-step grouping

Answer: B. 6

First find the number of chairs: 6 × 4 = 24. After 5 are taken away, 24 − 5 = 19 chairs remain.

Group the remaining chairs in threes: 6 × 3 = 18, with 1 chair left over. That spare chair cannot make a complete row, so the answer is 6 complete rows.

Why the other options do not work
  • A. Five rows use 15 chairs. Of the 19 available chairs, 4 would remain, enough to make another complete row.
  • C. Seven complete rows need 21 chairs, but only 19 remain.
  • D. Eight rows would use all 24 original chairs. This ignores the 5 chairs taken away.
Practise modelling and checking in the OC Maths guide

Question 2: Fractions and remainder

A 120 cm ribbon is cut into three pieces. The first piece is one quarter of the whole ribbon. The second is 15 cm longer than the first. How long is the third piece?

  1. 30 cm
  2. 45 cm
  3. 60 cm
  4. 75 cm
Show answer and explanation for Mathematical Reasoning question 2: Fractions and remainder

Answer: B. 45 cm

One quarter of 120 cm is 30 cm. The second piece is 30 + 15 = 45 cm.

Subtract both pieces from the whole: 120 − 30 − 45 = 45 cm. The second and third pieces happen to have the same length.

Why the other options do not work
  • A. This is the first piece: one quarter of 120 cm.
  • C. The first two pieces total 75 cm, not 60 cm; 60 cm cannot be left.
  • D. This is the combined length of the first and second pieces, not the remainder.
Practise modelling and checking in the OC Maths guide

Question 3: Equal groups and comparison

Mia has 7 more stamps than Leo. Together they have 31 stamps. How many stamps does Leo have?

  1. 12
  2. 14
  3. 17
  4. 19
Show answer and explanation for Mathematical Reasoning question 3: Equal groups and comparison

Answer: A. 12

Remove Mia's extra 7 from the total: 31 − 7 = 24. The remaining stamps are two equal groups, each the size of Leo's collection.

Leo has 24 ÷ 2 = 12. Check: Mia has 19, and 12 + 19 = 31.

Why the other options do not work
  • B. If Leo has 14, Mia has 21 and the total is 35, not 31.
  • C. If Leo has 17, Mia has 24 and the total is 41, not 31.
  • D. Nineteen is Mia's number; Leo has 7 fewer.
Practise modelling and checking in the OC Maths guide

Thinking Skills

Question 1: Ordering constraints

Four cards labelled C, D, E and F are placed in a row from left to right. C is somewhere before E. F is immediately after C. D is at the right-hand end. Which card must be second from the left?

  1. C
  2. D
  3. E
  4. F
Show answer and explanation for Thinking Skills question 1: Ordering constraints

Answer: D. F

Place D fourth. Treat C and F as a joined pair because F must come immediately after C. E must be after C and cannot go between C and F, so the pair must come before E.

The only possible order is C, F, E, D. Check each rule against this order: C is before E, F is immediately after C, and D is last. F is therefore second.

Why the other options do not work
  • A. If C were second, F would be third. E would then have to be fourth, but that place is already occupied by D.
  • B. D must be at the right-hand end, which is fourth, not second.
  • C. Both C and the F immediately after it must come before E. There is only one place before the second position.
Practise checking rules in the OC Thinking Skills guide

Question 2: Elimination from clues

A red token is hidden in one of three boxes: P, Q or R. The label on P says 'The token is in Q.' The label on Q says 'The token is not in Q.' The label on R says 'The token is not in P.' Exactly one label is true. Where is the token?

  1. P
  2. Q
  3. R
  4. There is not enough information to choose one box.
Show answer and explanation for Thinking Skills question 2: Elimination from clues

Answer: A. P

Test P: its label is false, Q's is true and R's is false, giving exactly one true label.

If the token is in Q, P and R are true; if it is in R, Q and R are true. Both alternatives give two true labels, so P is the only possibility.

Why the other options do not work
  • B. If it is in Q, both P's and R's labels are true.
  • C. If it is in R, both Q's and R's labels are true.
  • D. Testing all three boxes leaves only P with exactly one true label.
Practise checking rules in the OC Thinking Skills guide

Question 3: Pattern rules

A machine changes a number by doubling it and then adding 3. Another machine changes a number by adding 3 and then doubling it. Both machines start with 5. How much greater is the second machine's result?

  1. 0
  2. 3
  3. 5
  4. 6
Show answer and explanation for Thinking Skills question 3: Pattern rules

Answer: B. 3

The first machine gives 5 × 2 + 3 = 13. The second gives (5 + 3) × 2 = 16.

Compare the outputs: 16 − 13 = 3. The second machine doubles the added 3 as well as the starting number.

Why the other options do not work
  • A. The operations occur in different orders, producing 13 and 16 rather than equal results.
  • C. Five is the starting number, not the difference between the results.
  • D. Six is the doubled addition in the second machine, but the first machine also adds 3; the difference is 3.
Practise checking rules in the OC Thinking Skills guide

Practice and review

SteadyMarks connects the timed student experience with explanation, reflection and a clearer decision for the next session.

Complete timed set

Work through a coherent set instead of an endless stream of unrelated questions.

Focused student mode

A calm online surface keeps a younger learner oriented without turning formal practice into a distracting game.

Useful answer review

The result and supported answer review help a family move from one score to one practical next action.

Parent-readable progress

Use supported skill patterns and recent effort to choose a specific, proportionate next session.

Preparing for Opportunity Class

The complete free choice brings the currently supported subject tests together under one family entitlement.

Use official material first, then add independent practice.

Opportunity Class applicants usually sit the placement test in Year 4 for entry in Year 5; check the Department's current Opportunity Class information for individual circumstances. Start with its official test preparation material to learn the current test experience. SteadyMarks is independent: our original questions are additional practice, not Department material and not an admission or result prediction.

Reading

Locate the words that support an answer, then compare them with the explanation during review.

Mathematical Reasoning

Represent the relationship before calculating, then check whether the answer fits the question.

Thinking Skills

Apply each stated rule carefully, test the options and explain why alternatives do not follow.

Review what happened

Separate a knowledge gap from a reading, timing or screen-navigation slip, then choose one method to practise next.

Review and next steps

No inflated prediction is needed. A useful result should explain what happened and point to a manageable action.

Practise

Sit the timed tests

Build familiarity with sustained attention, question navigation and working within the timer shown for each test.

Understand

Review what happened

Notice missed, uncertain and unanswered questions, then use the supported explanation to compare methods.

Focus

Choose one next action

Return to a specific reasoning skill or practice habit instead of simply assigning another complete paper.

Common questions

Is this an official test?

No. SteadyMarks is an independent practice platform. Its tests are not official results, admission predictions or endorsed assessment material.

What does the free choice include?

One family can choose either one complete OC set or one complete Selective set, assigned to one child for 30 days from assignment. It includes the supported timed tests, result and answer-review experience.

Do we need to buy anything?

No purchase is required to claim the free test. Current practice-pack pricing is listed on the Pricing page.

Start practising

Choose the free OC test, create the family account and assign it to the child who will sit it.

Explore Thinking Skills, Maths and Reading methods in Learning Lab. Lesson access depends on the student's pack.