The CAT4 (Cognitive Abilities Test 4) is the most widely used academic assessment in British-curriculum schools across the UAE. If your child attends — or is applying to — a British-curriculum international school in Dubai, Abu Dhabi, Sharjah, or elsewhere in the Emirates, they will almost certainly sit the CAT4 at some point in their school career. Understanding what the CAT4 measures, how scores are reported, and how schools use results is essential for any family in the UAE school system.
What Is the CAT4?
The Cognitive Abilities Test 4 (CAT4) is published by GL Assessment, the UK's leading educational assessment company. It is designed to measure reasoning ability across four distinct cognitive domains — verbal, quantitative, nonverbal, and spatial — rather than academic knowledge in specific subjects. Because it is not a knowledge test, a child who has attended different schools in different countries, or whose home language is not English, can still be accurately assessed.
CAT4 is used in more than 3,000 schools in the UAE, Saudi Arabia, and across the wider Middle East and North Africa region. In the UAE specifically, it is used by most schools following the English National Curriculum, the British curriculum, or who use UK-derived assessment frameworks. It is administered from Year 3 upwards, with different levels of the test calibrated for different age groups.
The test is administered on paper or on a computer (CAT4 Digital), typically takes approximately 2.5 hours across two sessions, and is scored centrally by GL Assessment against a UK norm group. Schools receive detailed reports showing individual student scores and how each student compares to UK peers of the same age.
The Four Batteries Explained
The ability to reason with words, language concepts, and verbal relationships. A child who scores well on the verbal battery can identify patterns in how words relate to each other — for example, recognising that "doctor : hospital" has the same relationship as "pilot : cockpit."
The ability to reason with numbers and numerical relationships. This is not a mathematics knowledge test — it does not test arithmetic or algebra. It tests whether a child can identify and extend numerical patterns and relationships.
The ability to reason with abstract shapes and patterns. Questions show sequences or groups of geometric figures and ask the child to identify which figure completes the pattern. Completely language-independent.
The ability to reason about 2D and 3D space — to mentally rotate, fold, or manipulate shapes. This battery is unique to CAT4 among major cognitive tests and measures a dimension of reasoning not captured by verbal, quantitative, or nonverbal tests.
How Scores Are Reported
CAT4 reports Standard Age Scores (SAS) for each battery and a mean (overall) SAS. The SAS scale has a mean of 100 and a standard deviation of 15 — the same scale used by IQ tests and most professional cognitive assessments. This makes the scores directly comparable to other standardised assessments.
| SAS range | Stanine | Description | Approx. % |
|---|---|---|---|
| 127+ | 9 | Very High | 4% |
| 119–126 | 8 | High | 7% |
| 112–118 | 7 | Above Average | 12% |
| 104–111 | 6 | Slightly Above Average | 17% |
| 96–103 | 5 | Average | 20% |
| 89–95 | 4 | Slightly Below Average | 17% |
| 81–88 | 3 | Below Average | 12% |
| 74–80 | 2 | Low | 7% |
| <74 | 1 | Very Low | 4% |
In addition to the SAS and stanine, CAT4 reports a CAT4 profile — a visual representation of the four battery scores relative to each other. A flat profile (all four batteries similar) is common. A jagged profile (significant differences between batteries) can indicate specific learning strengths or challenges and is a useful conversation starter with the child's school.
How UAE Schools Use CAT4 Results
In the UAE context, CAT4 is used in three main ways:
- Admissions screening: Some schools use CAT4 (or a similar GL Assessment tool) as part of their admissions process, particularly for applications to Year 7+ (secondary entry). A mean SAS below a certain threshold — typically around 90–95 — may indicate that a child will struggle with the school's academic programme.
- Setting and ability grouping: Many British-curriculum schools in the UAE use CAT4 to form ability groups (sets) in core subjects, particularly in Year 7 and Year 8. A child's CAT4 profile can inform which set they are placed in for Maths, English, and Science.
- Identifying underachievement: One of CAT4's most powerful uses is identifying students who are performing below their cognitive potential. If a child scores a high SAS on CAT4 but is underperforming academically, this gap (sometimes called the "potential-performance gap") triggers investigation — is there a learning difference? A wellbeing issue? A language barrier?
KHDA context: The Knowledge and Human Development Authority (KHDA) — which oversees private schools in Dubai — uses data from standardised assessments including CAT4 in its school inspection framework to evaluate whether schools are successfully stretching high-ability students and supporting those with additional needs. Schools that effectively use CAT4 data to close potential-performance gaps tend to receive stronger KHDA inspection ratings.
Preparing for CAT4
CAT4 is a reasoning test, not a knowledge test, which limits how much preparation is possible. However, familiarity with the question formats — particularly the nonverbal and spatial batteries — does produce modest score improvements. The most effective approach is:
- Expose your child to figure matrix and figure classification puzzles (IQ-style nonverbal reasoning books are widely available). These directly mirror the CAT4 nonverbal battery.
- Practice number series and number analogy questions. These mirror the CAT4 quantitative battery.
- For the spatial battery, building toys (Lego, Magformers), paper folding activities, and 3D spatial puzzles build the underlying skill over time.
- Do not attempt to "prepare" for the verbal battery through vocabulary drilling if English is not your child's first language. Schools should account for EAL status in interpreting verbal battery scores.
For more on how UAE schools use CAT4 scores in admissions and what to expect from the process, see our guide to British curriculum school admissions in Dubai and Abu Dhabi.