No, the 11+ is not an IQ test, even though it is often described as one. An IQ test sets out to measure a child's general intelligence as a fixed quantity. The 11+ is a blend of two different things: attainment in the school curriculum, mainly English and maths, and reasoning aptitude through verbal and non-verbal papers. Those reasoning papers do look and feel like the puzzles in a cognitive-ability test, which is where the confusion comes from. But there is one decisive difference: you can prepare for the 11+, and familiarity and practice genuinely help.
- The 11+ is not a pure IQ test; it blends curriculum attainment with reasoning aptitude.
- Its verbal and non-verbal reasoning papers resemble cognitive-ability tests like the CAT4, which are aptitude tests, not IQ tests.
- An IQ test aims to measure fixed general intelligence; the 11+ measures developed skills at a point in time.
- Crucially, unlike a pure IQ test, you can prepare for the 11+, and familiarity and practice help.
So, is it an IQ test?
No. The 11+ is best understood as part attainment test and part aptitude test. The English and maths sit squarely on what children are taught at school, while the verbal and non-verbal reasoning measure how a child works with words, patterns and logic. An IQ test, by contrast, tries to capture one overall number for general intelligence. The 11+ is not trying to do that, and it would be a poor IQ test if it were, because so much of it rests on learned content.
What an IQ test sets out to do
An IQ test is designed to estimate general intelligence and express it as a single score, ideally one that stays fairly stable over time. To do that, it deliberately avoids taught content, so that what it measures is reasoning rather than schooling. A good IQ test is also built to be hard to coach, because the whole point is to read underlying ability, not preparation.
What the 11+ actually measures
The 11+ is different on every count. It openly tests taught content: maths and English from the primary curriculum. On top of that it adds verbal and non-verbal reasoning, which are not curriculum subjects but are still skills a child can develop. Our guide to the subjects tested in the 11+ sets out the full mix, and the exam types and boards guide shows how GL, CEM and ISEB combine these papers in different ways.
Why people think it is an IQ test
The confusion is understandable, because the reasoning papers really do resemble IQ-style puzzles: analogies, sequences, codes and shape matrices. Some of this overlaps with the CAT4, the Cognitive Abilities Test that GL Assessment produces for schools. The key fact, though, is that the CAT4 itself is described as an aptitude test, not an IQ test, and even it can be practised for, in the sense that familiarity with the question styles helps a child show what they can do. The 11+ leans even further from a pure IQ test, because it also rewards taught maths and English.
A pure IQ test is designed to resist preparation. The 11+ is the opposite. Curriculum content is taught at school, and reasoning improves with familiarity, practice and timing. That is why steady preparation moves the needle on the 11+ in a way it never could on a true IQ test.
What this means for your child
The practical takeaway is reassuring. The 11+ is not a fixed verdict on how clever a child is, so it is a mistake to think a child either "has it" or does not. Reasoning skills grow, curriculum knowledge is taught, and confidence with the format builds with practice. Our guides to preparing for verbal reasoning and non-verbal reasoning cover the parts school never teaches, and a few minutes of daily practice with Pip keeps all four skills ticking over without the pressure of cramming.
Arielle handles SEO and AEO growth at Pip, with over 10 years in the digital marketing space working with brands and founding her own projects.