
ISEB Pre-test 2026: Complete Parent Guide

The ISEB Pre-test remains one of the most widely used entrance assessments for UK independent senior schools at 11+ and 13+. If your child is applying to a selective school for Year 7 or Year 9 entry, there is a strong chance they will be required to sit it.
This updated 2026 guide explains:
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What the ISEB Pre-test is
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Which schools use it
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The latest format and scoring structure
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What counts as a strong score
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How to prepare effectively
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How online practice can make a measurable difference
What Is the ISEB Pre-test?
The ISEB Pre-test is developed and administered by Independent Schools Examinations Board and is delivered online by GL Assessment.
It is an adaptive, computer-based assessment typically taken in Year 6 or Year 7, depending on the school and entry point (11+ or 13+).
The test assesses four core areas:
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English
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Mathematics
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Verbal Reasoning
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Non-Verbal Reasoning
Because the test is adaptive, the difficulty of questions changes depending on your child’s responses. This allows schools to gain a more precise measure of underlying ability.
Which Schools Use the ISEB Pre-test?
Many of the UK’s most competitive independent schools use the ISEB Pre-test as part of their admissions process.
Examples include:
Some schools use the Pre-test as a filtering stage before interviews and further assessments. Others use it to determine conditional offers (often linked to later Common Entrance performance at 13+).
Always check the admissions page of your chosen school for the most up-to-date entry requirements, as policies do change.
2026 Test Format: What Parents Need to Know
The ISEB Pre-test is:
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Fully online
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Multiple-choice throughout
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Adaptive in nature
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Standardised and age-weighted
⏱ Duration
The full assessment typically takes around 2 hours 15 minutes, split approximately as follows:
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English – 40 minutes
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Mathematics – 40 minutes
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Non-Verbal Reasoning – 30 minutes
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Verbal Reasoning – 25 minutes
Short breaks are usually built in between sections.
Key Format Features (Current Structure)
✔ Adaptive Questioning
Each answer influences the next question’s level of difficulty. This means the experience differs slightly for every child.
✔ Age Standardised Scoring (SAS)
Scores are age-weighted to ensure younger candidates within the year group are not disadvantaged.
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Average score: 100
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Strong competitive score: 110+
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Highly competitive schools: 120+
(Exact expectations vary by school and year.)
✔ Accessibility Adjustments
The system allows for:
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Extra time (typically 25%)
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Reader support
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Rest breaks
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Adjusted font size and colour
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Option to hide the timer
Applications for access arrangements must be made during registration and are usually supported by school documentation.




