CAT4 Test Preparation,
Online Practice & Mock Tests






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What is the CAT4 used for?
Admission to selective schools
Streaming students into sets
Indicator for national tests and exams
How Atom turns revision into CAT4 exam day success
Weekly revision plan
Weekly revision plan
A clear plan, built around your test date.
Tell Atom when your child's CAT4 exam is, and we’ll create a clear, personalised, weekly plan all the way to exam day. All the CAT4 content your child needs to learn is covered, so they’ll never have to wonder what to work on next.
Unlimited CAT4 practice tests
Unlimited CAT4 practice tests
Practice with realistic tests.
Practice as often as needed with unlimited, online and printable CAT4 mock tests included with your subscription. Each test has new questions, so they can keep improving without seeing the same content again.
Instant marking
Instant marking
Just like a great tutor, Atom gives instant, exam-aligned feedback.
After any practice or mock test, your child sees results straight away, with recommended help sheets and videos for topics they found tricky.
Photograph your child’s CAT4 practice test answers and get their results immediately.
Check they’re on track
Check they’re on track
Feel confident that preparation is working.
Track progress over time and make sure your child is on course for CAT4 exam day success. Compare their performance to data from successful applicants to their target school.




Three Steps to CAT4 success
Learn
Your child gets a personalised CAT4 exam prep plan
As your child learns, questions adapt to build confidence steadily
3000+ flashcards, 2000+ helpsheets, 600+ videos and topic lesson library
Track
See how your child compares to successful CAT4 students
Identify your child’s strengths and gaps across all CAT4 exam topics
Get targeted practice recommendations based on their performance data
Test
Unlimited, realistic CAT4 mock tests specific to their target school
Available both on paper and online to build exam-day confidence
Instant results and detailed explanations help them learn from every mistake
Free CAT4 resources to help you get started
CAT4: How to prepare
11+ verbal reasoning guide
Non-verbal reasoning guide
Free CAT4 course
Exam Prep
Start CAT4 exam preparation. Mock tests not included. Suitable for levels pre A-D (ages 7-12).
Exam Prep Plus
Complete CAT4 exam preparation, with unlimited mock tests. Suitable for levels pre A-D (ages 7-12).
Exam Prep
Start preparing for 11+ grammar and private school exams.
Exam Prep Plus
Boost preparation for 11+ grammar and private school exams.
Frequently Asked Questions
The CAT4 is a cognitive abilities test created by GL assessment. It is designed to help teachers understand how a child thinks and their academic abilities. It's used for entrance exams such as the 11 plus.
Our CAT4 practice is designed to be very close to the real test — including the question types, timings and scoring. We want exam day to feel familiar, not stressful.
By practising with Atom’s CAT4 tests, your child will know what to expect and feel more confident when it matters.
Regular practice on Atom can help improve your child’s CAT4 score. It builds familiarity with the test, reduces nerves, and strengthens the key reasoning skills the CAT4 assesses.
Many families tell us that with steady, guided practice, their children feel more confident and perform more accurately on the day.
Atom fits around your family’s routine. Your child can learn anytime, anywhere — before school, after dinner or at the weekend.
Short, regular practice works best. It helps build good habits and gives our algorithm enough information to personalise the work for your child.
We recommend 20–30 minutes a day, a few days each week. As the exam approaches, your child may choose to spend a little longer on Atom to feel fully prepared.
Atom Home gives you unlimited CAT4 practice tests for Levels A-D, with instant feedback. Exam Prep Plus subscribers get:
- Online mock tests: automatically timed and marked for you.
- Downloadable paper tests and answer sheets: print, complete the test, and photograph your child's answers to see their results.
No — Atom is designed for children to use independently. It’s simple to navigate, and the helpsheets and videos guide your child as they learn new skills and grow in confidence. You can still stay involved by checking their progress and scores anytime.
As well as fun things like coins to collect and worlds to explore, our algorithm is hard at work behind the scenes. Atom continually adapts in difficulty to fit your child's learning style and pace. This keeps them challenged – without demotivating them.
With Atom Home, you can help your child prepare for the CAT4 exam. No other platform brings together smart adaptive learning, teacher-written content and expert guidance all in one place. And you’re never on your own — our friendly team is here to help by LiveChat, phone or email.
You can also join our parent webinars for honest, helpful tips on exam prep and school admissions.
The CAT4 test is used for admissions and setting in selective schools. It is mainly used by grammar schools assessing students for entry into Year 7 through the 11 plus process. The CAT4 is designed to measure academic potential rather than current knowledge.
If your child is taking the CAT4 as part of the 11 plus process, they will most likely sit a Level C or Level D CAT4 test.
The CAT4 test has 10 available levels, each designed to be age-appropriate. The most commonly used are Levels A–G:
- Pre-A: ages 7–8
- Level A: ages 8–9
- Level B: ages 9–10
- Level C: ages 10–11
- Level D: ages 11–12
- Level E: ages 12–13
- Level F: ages 13–15
- Level G: ages 15+
If your child is taking the CAT4 as part of the 11 plus process, they will most likely sit Level C or Level D. Children in Year 6 (ages 10–11) typically sit Level C, while those in Year 7 (ages 11–12) typically sit Level D.The content and difficulty of questions are tailored to each level, so younger children are not expected to tackle the same material as older ones. Scoring also takes your child's exact age into account, so they are always compared fairly against others of the same age at each level.
The CAT4 is marked by computers. It calculates your child's total score and then converts this into a Standardised Age Score (SAS).
This is so your child’s exact age is taken into account, so younger children are not at a disadvantage. The SAS is the main score schools look at. A score of 100 means a child is exactly average for their age.
Find out more in our guide to the CAT4.
Yes. Atom adapts to every student's current level. You'll get clear feedback on what's going well and exactly where to focus next, so you can make steady, meaningful progress towards your goals.
We’ve matched everything to the real exam - the curriculum, question types, timing and scoring. Our goal is for exam day to feel calm, familiar and free from surprises.
With Atom, you can get unlimited practice papers for your child, including ISEB, CAT4 and Quest with instant marking and progress tracking to keep them on track.
By practising with Atom’s online and downloadable tests, your child will know exactly what to expect, helping them feel confident and ready.
Find out more about our Unlimited paper tests on Atom.
Looking for CAT4 advice?
We’re here to support you through your child’s CAT4 journey.
Whether you want help building a revision plan, understanding CAT4 exam content, or checking key dates, our team is happy to help.
