What Is the CAT4 Test? The Complete Parent's Guide [2026]

If your child is applying to an international school — whether in the UK, Dubai, Singapore, Hong Kong, or elsewhere — you've likely heard about the CAT4 test. But what exactly is it, and why does it matter so much for admissions?

This comprehensive guide explains everything parents need to know about the CAT4 in 2026: what it measures, how it's scored, which schools require it, and how to prepare your child effectively.

What Is the CAT4?

The CAT4 (Cognitive Abilities Test, 4th Edition) is a standardised assessment published by GL Assessment. It measures a child's cognitive abilities — how they think, reason, and solve problems — rather than what they've been taught in school.

Unlike traditional exams that test curriculum knowledge, the CAT4 evaluates raw cognitive potential across four distinct areas. This makes it particularly useful for international school admissions, where students come from different educational backgrounds.

The Four Batteries of the CAT4

The CAT4 is divided into four batteries, each assessing a different type of reasoning:

1. Verbal Reasoning

Tests your child's ability to understand and work with words. This includes recognising relationships between verbal concepts, understanding word analogies, and classifying words into categories. Strong verbal reasoning correlates with success in language-heavy subjects like English and History.

2. Quantitative Reasoning

Assesses numerical problem-solving ability. Your child will work with number patterns, sequences, and mathematical relationships. This battery predicts performance in Mathematics and Science.

3. Non-Verbal Reasoning

Uses shapes and patterns to measure problem-solving ability independently of language. This is particularly important for children who speak English as a second language, as it removes language bias from the assessment.

4. Spatial Reasoning

Evaluates the ability to visualise and manipulate shapes mentally — including 2D and 3D transformations. Spatial reasoning is linked to success in subjects like Design Technology, Art, and advanced Mathematics.

CAT4 Test Levels Explained

The CAT4 is administered at different levels depending on the child's age:

See our detailed preparation guide for the most popular level: CAT4 Level D (Year 7 entry).

How Is the CAT4 Scored?

CAT4 results are reported using two main score types:

• SAS (Standard Age Score): A normalised score with a mean of 100 and standard deviation of 15. An SAS of 100 means your child performed exactly at the average for their age. Scores above 115 indicate above-average cognitive ability.
• Stanine Score: A simplified 1–9 scale where 5 is the average. Stanines 7–9 indicate above-average ability, while 1–3 indicate areas that may need additional support.

For a detailed breakdown of what each score means, read our CAT4 Scores Explained guide.

Which Schools Use the CAT4?

The CAT4 is used by thousands of schools worldwide, including:

• United Kingdom: Grammar schools, independent schools, and many state secondaries use the CAT4 for admissions and streaming.
• Dubai & UAE: GEMS, Taaleem, Cognita, and most KHDA-rated schools require CAT4 scores for admission.
• Singapore: International schools like UWCSEA, Tanglin Trust, and SAS use the CAT4 as part of their admissions process.
• Hong Kong: ESF schools, CDNIS, ISF, and other international schools use the CAT4 to assess applicants.
• International schools globally: British curriculum schools across Europe, Asia, Africa, and the Middle East frequently require CAT4 scores.

How to Prepare Your Child for the CAT4

While the CAT4 tests cognitive abilities rather than learned knowledge, targeted preparation can significantly improve your child's performance. Here are proven strategies:

• Take a diagnostic test: Start with a full practice test to identify your child's strengths and weaknesses across all four batteries.
• Focus on weak areas: Spend more time on the batteries where your child scores lowest. Small improvements in weak areas have the biggest impact on overall scores.
• Practice under timed conditions: The real CAT4 is strictly timed. Help your child get comfortable with working efficiently under time pressure.
• Use AI-powered practice: MindScout's AI tutor Atlas adapts to your child's ability in real-time, explaining each question in child-friendly language and adjusting difficulty to the optimal learning zone.
• Be consistent: Short daily sessions (15–20 minutes) are far more effective than occasional long cramming sessions.

Ready to start preparing? Take a free CAT4 practice test and get your child's personalised score report in 20 minutes.