CAT4 Explained: What It Tests and How to Prepare
If your child's school or target school has mentioned "CAT4," you've likely noticed something odd in the advice available online: some sources say you can't prepare for it at all, while tutoring companies sell entire CAT4 preparation courses. Both are half-right, and understanding why is the key to helping your child properly.
What Is CAT4?
CAT4 (Cognitive Abilities Test, 4th Edition) is a standardised assessment published by GL Assessment, widely used by UK secondary schools (particularly grammar and independent schools) to measure a child's reasoning ability across four distinct areas, rather than their taught curriculum knowledge.
Unlike many papers, CAT4 isn't testing what a child has been taught in class. It's designed to assess underlying reasoning ability, which is why it's often used alongside (or sometimes instead of) traditional subject-based 11+ papers, particularly for setting, streaming, or identifying a child's learning profile once they've already joined a school.
The four batteries of CAT4
CAT4 is structured around four "batteries," each measuring a different type of reasoning:
1. Verbal Reasoning
This measures the ability to reason using words and language-based concepts — but critically, it's testing reasoning through language, not vocabulary size or reading comprehension in the way an English exam would. Question types include verbal classification (finding the odd one out in a group of words) and verbal analogies (completing word relationships).
2. Non-Verbal Reasoning (Figure Classification and Analogies)
This assesses pattern recognition using shapes and figures, independent of language. It's often the area where children from different educational or language backgrounds perform most consistently, since it doesn't rely on vocabulary.
3. Quantitative Reasoning
This tests reasoning with numbers and quantities — but again, the focus is on logical relationships (number analogies, number series) rather than the arithmetic skill measured in a maths exam.
4. Spatial Reasoning
This measures the ability to mentally manipulate and visualise shapes in two and three dimensions — for example, working out what a shape looks like when rotated, or how a 2D net folds into a 3D object.
Why CAT4 feels "Impossible to revise for" and why that's only half true.
CAT4 was deliberately designed to reduce the impact of coaching compared to traditional knowledge-based tests, because its purpose is to estimate a child's underlying reasoning ability as accurately as possible — including for children who haven't had access to intensive tutoring. This is why some schools explicitly discourage heavy CAT4-specific coaching: the aim is to see a genuine cognitive profile.
However, "can't be revised for" doesn't mean "can't be prepared for." There's an important difference between:
I. Content cramming (memorising facts or formulas) which genuinely doesn't help with CAT4, because there's no content to memorise.
II. Familiarisation (understanding the question formats, practising the specific style of reasoning required, and reducing test-day anxiety) — genuinely does help, because an unfamiliar format can suppress a child's true performance regardless of their actual reasoning ability.
What actually helps a child prepare for CAT4
1. Familiarity with question formats
A child sitting CAT4 for the first time may lose marks simply from not understanding what a question is asking, rather than from an inability to reason correctly. A small amount of practice with sample question formats (enough to remove this format confusion) is genuinely useful and is different from intensive coaching.
2. General reasoning practice (Not CAT4-specific drilling)
Because CAT4 measures general reasoning ability, broad activities that build reasoning skills (puzzles, pattern games, verbal and non-verbal reasoning practice used for 11+ preparation) tend to have some genuine crossover benefit, since they're building the same underlying cognitive skills rather than "gaming" a specific test.
3. Reducing test anxiety
Because CAT4 is often unfamiliar and untimed pressure differs from subject exams, a calm, low-stakes approach to the test at home makes a genuine difference. Children who are told "just do your best, this isn't something you can fail" tend to perform closer to their true ability than those who are told it's a make-or-break test.
4. Spatial reasoning specifically benefits from practice
Of the four batteries, spatial reasoning is the one most consistently shown to improve with deliberate practice — activities like puzzles, construction toys, and specific spatial reasoning workbooks build a skill that transfers reasonably well to this section.
How CAT4 Differs From the 11+ Exam
This is where a lot of parental confusion comes from, since both assessments can feel similar on the surface but here are some key differences.
Purpose: CAT4 measures underlying reasoning ability while traditional 11+ measures readiness for a specific selective curriculum.
Content basis: CAT4 is not curriculum-based where as traditional 11+ often includes curriculum-linked maths and English.
Coachability: CAT4 is deliberately designed to resist heavy coaching while traditional 11+ is more responsive to structured tutoring and practice.
Scoring: CAT4 uses Standardised age-based scores (SAS) compared to a national sample while traditional 11+ often uses raw or standardised scores specific to the school/authority.
Some schools use CAT4 as one part of a broader entry assessment alongside subject papers; others use it after entry to inform setting and identify children who might be underperforming relative to their reasoning potential (or vice versa). It's worth checking directly with a target school which role CAT4 plays in their process, since this varies significantly between schools.
Understanding CAT4 Scores
CAT4 results are typically reported as Standard Age Scores (SAS), where 100 represents the average for a child of that exact age nationally. Scores are usually presented across the four batteries separately rather than as a single combined number, because the point of the test is to build a profile — a child might score well above average on non-verbal reasoning and closer to average on verbal reasoning, and this pattern is often more informative to schools than a single overall figure.
A common parental misconception is treating CAT4 like a pass/fail exam. It isn't. It's a profiling tool, and schools generally use it to understand a child's cognitive strengths rather than to draw a hard cutoff line — although, in practice, some selective schools do use CAT4 scores as part of a combined threshold for entry.
A balanced approach for parents
Given how CAT4 is designed, the most effective parental approach tends to be:
- A short familiarisation phase (a few practice sessions with sample question types, not weeks of drilling)
- General reasoning-building activities woven into normal life rather than a dedicated "CAT4 course"
- A calm framing of the test to reduce anxiety
- Extra attention to spatial reasoning specifically, since it responds best to deliberate practice
This is a different approach to the more intensive practice schedule that suits 11+ preparation, and treating the two identically is one of the most common (and most easily avoided) mistakes parents make.
FAQ
Can you actually improve a CAT4 score with tutoring? Heavy content-based tutoring has limited effect, since there's no fixed content to teach. However, familiarisation with formats and general reasoning-skill development (particularly for spatial reasoning) can genuinely improve performance closer to a child's true ability.
Is CAT4 the same as the 11+? No. Some schools use CAT4 as part of their 11+ entry process, but CAT4 itself measures general reasoning ability rather than curriculum knowledge, and is also widely used after entry for setting and streaming purposes.
What is a "good" CAT4 score? A Standard Age Score around 100 represents the national average for a child's age. Scores meaningfully above 100 (often 115–120+, depending on the school's threshold) are generally considered strong, though what counts as "good enough" depends entirely on the specific school's use of the test.
Should my child do CAT4 practice papers? A small number, primarily for familiarisation with format and timing, is reasonable. Extensive drilling is unlikely to produce the same benefit it might for a curriculum-based exam, and can create unrealistic expectations about how coachable the test actually is.
Does CAT4 measure intelligence? CAT4 measures specific types of reasoning ability, not a single "intelligence" score. It's best understood as a profiling tool for cognitive strengths and areas for development, not a definitive measure of a child's overall potential.
