Your complete preparation package for ISEB exams.

Atom Nucleus is an online learning and revision platform designed for ISEB Pre-Tests preparation. Getting into your dream school has never been so easy!

  • Unlimited ISEB-replica mock tests

  • 90,000+ English, maths, verbal & non-verbal reasoning questions

  • Clear data on progress and areas for improvement

Atom Nucleus Pricing

Exam Prep Plus: £59.99/month

Master the content of the ISEB Common Pre-Test and hone exam technique.

  • Unlimited practice papers that match your target schools' exams

  • Verbal and non-verbal reasoning

  • Key Stage 2 English, maths & science

  • Live and on-demand lessons & revision programmes

  • Progress dashboard

  • Specialist webinars

Try Atom for free

Why prepare for the ISEB with Atom?


Your child builds their understanding of the ISEB curriculum through practice questions, helpsheets and videos.


Our technology adapts to your child, targeting their areas for improvement and building confidence in tricky topics.


Your child hones their exam technique with unlimited ISEB practice papers, automatically marked for you.


You get clear data on your child's progress and performance compared to their peers.

Try Atom free for 5 days

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About the ISEB Common Pre-Test

What is the ISEB?

The ISEB (Independent Schools Examinations Board) Common Pre-Test assesses students for entry into independent senior schools.

Schools use it to test your child's potential in core subjects and determine if they're likely to thrive at the school.

Some schools use it as a first round entrance exam, followed by their own test papers and an interview stage.

What subjects are covered?

The ISEB consists of four tests covering English, maths, verbal reasoning and non-verbal reasoning.

  • English and maths are based on Key Stage 2 national curriculum content

  • Verbal reasoning assesses your child's ability to solve problems with written information

  • Non-verbal reasoning tests your child’s logic, problem-solving and spatial awareness


Registration opens in September. Your child will sit the ISEB in either November or January of Year 6.

The ISEB takes about 2 hours 15 minutes total. The tests can be taken on the same day or separately.

  • Maths: 40 minutes

  • English: 40 minutes

  • Non-verbal reasoning: 30 minutes

  • Verbal reasoning: 25 minutes


The ISEB is fully multiple-choice and taken on a computer.

Your child can take it at their own school, the target senior school, or a test centre.

It's the only adaptive entrance exam, meaning the questions get more difficult depending on how your child performs.

Unlimited ISEB mock tests

With your Atom Nucleus subscription you get unlimited online practice papers for senior school exams, including the ISEB.

Your child can take the tests as many times as they like and never see the same paper twice. No more rationing past papers!

No more marking them either, as everything is instantly marked and analysed for you.

See which schools and exam boards we have mock tests for:

Explore mock tests

We're here to support parents every step of the way.

Get expert advice

Our Education Experts can help with any questions you may have about preparing for the ISEB or admissions to your target schools.

You can email us any time on [email protected].

Chat with a member of our team by clicking the LiveChat icon in the bottom right of your screen.

Or give us a call:

020 3973 9226
Atom Learning customer support team


What age is Atom Nucleus suitable for?

Atom Nucleus is designed for children ages 7–11. Our Exam Prep packages are specifically for children preparing for entrance exams.

Which exams can Atom help my child prepare for?

Atom is designed to help you prepare for ISEB and other independent school-specific 11 plus and 13 plus exams.

Do I need to supervise my child on Atom?

No, our platform is designed for your child to use independently. It's fun and easy to navigate, with helpsheets and videos to help them build and consolidate their knowledge.

What support does Atom provide?

We're here to support you and your child with your education journey. You can talk with our Education Experts via LiveChat, phone or email. You can also attend our parent webinars for advice on exam prep and school admissions.

Try Atom for free

Start your child's journey to success in the ISEB today. Use the full features of Atom Nucleus free for 5 days. Cancel anytime.

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