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What Is the HAST?

A plain-English guide to the Higher Ability Selection Test — what it measures, section by section, and how to prepare.

The Higher Ability Selection Test (HAST) is a reasoning-based assessment used by many selective entry, gifted education, and academic extension programs across Australia, including Ignite.

Unlike a school exam, the HAST doesn't focus on your knowledge of a particular subject. Instead, it measures your ability to think critically, reason logically, solve unfamiliar problems, and learn quickly. The questions are intentionally designed to challenge students of all academic levels, meaning success depends on how you process information rather than how much content you've memorised.

The assessment typically includes several different sections, each designed to measure a different type of reasoning ability.

Verbal reasoning
Understand, interpret and draw conclusions from written information
Quantitative reasoning
Apply mathematical thinking to unfamiliar problems and data
Abstract reasoning
Find the rules behind shapes, symbols and visual sequences
Written expression
Organise and communicate your ideas clearly under time pressure
The four reasoning abilities the HAST typically assesses.

Verbal reasoning

One of the largest components of the HAST is verbal reasoning. This section assesses your ability to understand complex written information, identify relationships between ideas, recognise patterns in language, and draw logical conclusions.

Rather than asking straightforward comprehension questions, you'll often need to infer meaning, identify assumptions, determine the author's intent, or select the most logical interpretation of a passage.

How to prepare

Strong readers generally perform well because they've spent years developing vocabulary, comprehension, and analytical thinking. You can improve these skills by:

  • Reading novels from a range of genres
  • Reading newspapers and quality news websites
  • Exploring opinion pieces and editorials
  • Learning unfamiliar vocabulary in context
  • Summarising articles in your own words
  • Asking yourself why an author has made a particular argument

The more varied your reading, the stronger your verbal reasoning becomes.

Quantitative reasoning

Despite what many students expect, the mathematics in the HAST is not particularly advanced. Instead, it assesses how well you apply mathematical thinking to unfamiliar situations.

Questions often involve interpreting data, recognising numerical relationships, estimating values, identifying patterns, and solving multi-step problems. Success comes from reasoning rather than memorising formulas.

How to prepare

Develop confidence with:

  • Percentages
  • Fractions
  • Ratios
  • Graphs and tables
  • Mental arithmetic
  • Number patterns
  • Logical mathematical puzzles

Timed practice helps you become comfortable solving problems efficiently without sacrificing accuracy.

Abstract reasoning

Abstract reasoning is often one of the most unfamiliar sections for students because it doesn't rely on words or traditional mathematics. Instead, you're presented with shapes, symbols, diagrams, or visual sequences and asked to identify the underlying rules or patterns.

This section measures your ability to recognise relationships, think flexibly, and solve entirely new types of problems.

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A typical pattern question: the dot moves one corner clockwise each step — so where is it in the fourth tile?

How to prepare

Abstract reasoning improves through regular exposure. Good practice includes:

  • Matrix reasoning questions
  • Pattern recognition exercises
  • Visual puzzles
  • IQ-style reasoning problems
  • Spatial reasoning games

As you practise, focus on identifying systematic changes rather than guessing.

Written expression

The written expression task is a core component of the HAST and gives you the opportunity to demonstrate how well you can organise, develop, and communicate your ideas. Rather than testing how many sophisticated words you know, it assesses the quality of your thinking and how effectively you express it.

Depending on the prompt, you may be asked to write a persuasive, expository, reflective, or creative response. Regardless of the format, markers are looking for clear, coherent writing with logical development of ideas. Your response is typically assessed on areas such as:

  • Ideas and content — are your ideas thoughtful, relevant, and well developed?
  • Organisation — does your writing have a clear introduction, body, and conclusion with smooth progression between ideas?
  • Language — is your vocabulary appropriate, varied, and precise?
  • Sentence structure — do you use a range of sentence types effectively?
  • Grammar, punctuation, and spelling — is your writing accurate and easy to read?
  • Audience and purpose — have you written in a way that suits the task and engages the reader?

How to prepare early

The best way to improve your writing is through regular practice rather than trying to memorise model essays. To build your written expression skills:

  • Write one or two responses each week to practice prompts
  • Read high-quality articles, opinion pieces, and books to expose yourself to different writing styles
  • Expand your vocabulary by learning new words in context instead of memorising lists
  • Practise planning your response before writing, ensuring your ideas flow logically
  • Review your work critically, checking for clarity, structure, and grammar
  • Ask a teacher, parent, or mentor for feedback on how your writing could be strengthened

The more you write, the more naturally you'll develop the ability to communicate your ideas clearly under timed conditions. Remember, the strongest responses are not necessarily the longest — they are the ones that are well organised, thoughtful, and directly address the prompt.

Final thoughts on Ignite preparation

The HAST measures how you reason, solve problems, interpret information, and communicate your ideas rather than how much you've memorised from the classroom.

The best preparation begins early. By reading widely, strengthening your reasoning skills, practising under timed conditions, and challenging yourself with new types of problems, you'll not only improve your performance on the HAST but also develop skills that will benefit you throughout high school and beyond.

  1. 6–12 months out
    Wide reading, mental maths, foundations
  2. 3–6 months out
    Regular reasoning and writing practice
  3. Final weeks
    Timed mocks, strategy and common traps
  4. February
    Test day
A typical preparation runway for students in Years 5–6.

Remember, preparing for the HAST isn't about learning all the answers. It's about becoming a stronger thinker. For more help preparing for the HAST, get in touch with us.