Exam Guide

ISEB Pre-test vs 11+: What’s the Difference? (Parent Guide 2026)

Simon4 March 2026 5 min read

If you’re researching UK school admissions, you will almost certainly come across two important assessments: the ISEB Pre-test and the 11+ exam.

Although both tests assess similar academic skills, they serve different purposes within the admissions process and are used by different types of schools.

Understanding the difference between the ISEB Pre-test and the 11+ can help parents plan the right preparation strategy for their child.

In this guide we explain:

What the ISEB Pre-test is
What the 11+ exam is
The key differences between the two
Which schools use each assessment
How children should prepare

What Is the ISEB Pre-test?

The ISEB Pre-test is an online entrance assessment created by the Independent Schools Examinations Board.

It is most commonly taken by pupils in Year 6 or Year 7 applying to independent schools for 13+ entry (Year 9).

Rather than being a final admissions exam, the Pre-test is usually used as a first-stage academic screening assessment.

Many independent schools use it to determine whether candidates should progress to later stages such as:

interviews
assessment days
further testing
conditional offers linked to Common Entrance at 13+

The test is computer-based and adaptive, meaning the difficulty of questions adjusts depending on how a pupil answers earlier questions.

Subjects Tested in the ISEB Pre-test

The assessment covers four main academic areas:

English
Mathematics
Verbal Reasoning
Non-Verbal Reasoning

The full test usually takes around 2 hours 15 minutes to complete.

All questions are multiple-choice, and results are reported using age-standardised scores (SAS).

The average score is 100, while highly competitive schools often expect scores above 110–120.

Which Schools Use the ISEB Pre-test?

Many leading UK independent schools use the Pre-test as part of their admissions process.

Examples include:

Some schools rely heavily on Pre-test results when selecting candidates, while others treat them as one part of a broader admissions process.

What Is the 11+ Exam?

The 11+ exam refers to entrance assessments taken in Year 6 for entry to Year 7.

Unlike the ISEB Pre-test, the 11+ is not a single national exam. Different schools and local authorities use their own versions of the test.

The 11+ is commonly used by:

grammar schools
selective independent schools

Many schools use tests created by major assessment providers such as:

GL Assessment
Centre for Evaluation and Monitoring (CEM)

Because each school or consortium sets its own admissions process, the format and difficulty of 11+ exams can vary.

Subjects Tested in the 11+

Most 11+ exams assess a combination of:

English comprehension
Mathematics
Verbal reasoning
Non-verbal reasoning

Some independent schools also include creative writing tasks or extended problem-solving questions.

Unlike the ISEB Pre-test, many 11+ exams are paper-based rather than computer-based.

A Key Example of the 11+: The Kent Test

One of the best-known grammar school entrance exams is the Kent Test, used by grammar schools across Kent.

The Kent Test is administered by Kent County Council and acts as a shared assessment for grammar schools within the county.

More than 30 grammar schools in Kent use this test – including The Judd School, The Skinners’ School, Tonbridge Grammar School, Dartford Grammar School and Invicta Grammar School – making it one of the largest selective school systems in England.

Children usually sit the Kent Test in September of Year 6, with results released in October before secondary school applications are finalised.

What Does the Kent Test Include?

The Kent Test typically includes two multiple-choice papers, each lasting around one hour.

These papers assess four subject areas:

English
Mathematics
Verbal Reasoning
Non-Verbal Reasoning (including Spatial Reasoning)

Some versions of the test may also include a short creative writing exercise, which schools may review when making borderline admissions decisions.

The purpose of the test is to identify pupils performing within roughly the top 25% of their year group, who are considered suitable for grammar school education.

Kent Test Scoring

Kent Test results are standardised and combined into an overall score.

Recent admissions guidance suggests pupils generally need:

a combined score of around 332
with no individual section below 108

to be assessed as suitable for grammar school.

However, the score required for admission varies depending on:

the specific grammar school
demand for places
catchment areas

Learn more about the Kent Test and explore practice materials here.

ISEB Pre-test vs 11+: Key Differences

Although both exams assess similar academic skills, they play different roles in school admissions.

Feature	ISEB Pre-test	11+ Exam
Typical age	Year 6 or Year 7	Year 6
Entry point	13+ (Year 9)	11+ (Year 7)
Format	Online, adaptive	Often paper-based
Question type	Multiple choice	Multiple choice + written
Purpose	First-stage screening	Main admissions exam
Schools	Independent schools	Grammar & independent schools

In simple terms:

11+ exams determine entry into senior school at Year 7.
The ISEB Pre-test is typically used for schools offering 13+ entry.

Which Exam Is Harder?

Parents often ask whether the ISEB Pre-test or the 11+ exam is more difficult.

In practice, the answer depends on several factors:

the school your child is applying to
the level of competition that year
your child’s strengths and weaknesses

The ISEB Pre-test can feel challenging because:

it is adaptive
reasoning questions require technique
children may be unfamiliar with computer-based testing

The 11+ exam can be demanding because:

written answers require precision
timing pressure can be intense
some schools include creative writing or complex maths problems

Both exams reward strong academic foundations and familiarity with exam-style questions.

How Should Children Prepare?

Regardless of which exam your child is taking, preparation should focus on three core areas.

1. Build Strong Maths and English Foundations

Both assessments rely heavily on strong curriculum knowledge.

Children should feel confident with:

reading comprehension
grammar and vocabulary
arithmetic and problem-solving

2. Practise Reasoning Questions

Verbal and non-verbal reasoning questions often follow recognisable patterns.

With practice, children become much faster at identifying:

word relationships
code patterns
shape sequences

Reasoning skills improve significantly with regular exposure.

3. Practise Under Exam Conditions

Many children struggle with exams simply because they are unfamiliar with the format.

Practising timed tests helps children:

build exam stamina
improve pacing
reduce anxiety on the day

Practising for the ISEB Pre-test

Because the ISEB Pre-test is fully computer-based, practising online can be particularly effective.

At White Dot Education, we provide realistic ISEB Pre-test practice designed to mirror the structure and difficulty of the real exam.

Our online platform allows students to:

practise maths, English and reasoning questions
sit timed exam-style tests
receive instant feedback
track progress across subjects

Practising realistic mock tests helps children become familiar with the format and perform with greater confidence.

Explore our ISEB Pre-test practice tests here.

Final Thoughts

The ISEB Pre-test and the 11+ exam are both important parts of the UK selective school admissions landscape, but they serve different roles.

The key distinction is simple:

11+ exams determine entry to senior school at Year 7.
The ISEB Pre-test is typically used for schools offering 13+ entry.

Understanding which pathway applies to your child makes preparation far more straightforward.

With strong academic foundations, reasoning practice and familiarity with exam-style questions, children can approach either assessment with confidence.

If your child is preparing for the ISEB Pre-test, structured online practice can help them build the skills and confidence needed to perform at their best.