Harrow School
Harrow on the Hill, United Kingdom. Practice coming soon.
Independent schools · Test: ISEB Common Pre-Test, then the Harrow Test
An independent school for boys that admits at Year 9. Every boy sits the ISEB Common Pre-Test in Year 6, and those who pass are invited to the Harrow Test in the spring term.
Key facts
checked 18 October 2026
- Selective entry
All boys must sit the ISEB Pre-Test, and standard applicants who pass are invited to sit the Harrow Test.
- Entry point
Year 9. Standard applicants register by 30 September of Year 6; later registrations are treated as late applicants.
- Test used
ISEB Common Pre-Test: an online multiple-choice assessment in verbal reasoning, non-verbal reasoning, English and maths, taking about two and a half hours. Standard applicants sit it between 1 October and the end of November in Year 6.
At a glance
Last checked 18 October 2026. Every fact is from the school’s own pages unless marked Reported by prep providers or Our view
- Selective entry
All boys must sit the ISEB Pre-Test, and standard applicants who pass are invited to sit the Harrow Test.
- Entry point
Year 9. Standard applicants register by 30 September of Year 6; later registrations are treated as late applicants.
- Test used
ISEB Common Pre-Test: an online multiple-choice assessment in verbal reasoning, non-verbal reasoning, English and maths, taking about two and a half hours. Standard applicants sit it between 1 October and the end of November in Year 6.
- Assessment and dates
Harrow Test in the spring term of Year 6: a 20-minute interview with a House Master, a one-hour computerised English and maths assessment, and a 20-minute classroom group activity.
The assessment.
What the school says
Harrow requires every boy to sit the ISEB Common Pre-Test, then invites those who pass to the Harrow Test.
ISEB Common Pre-Test: online multiple choice in verbal reasoning, non-verbal reasoning, English and maths, about two and a half hours.
Harrow Test in the spring term of Year 6: interview, one-hour computerised English and maths, and a group activity.
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The school’s own pages
Always check dates and requirements with Harrow School directly. These links open the school’s site in a new tab.
Mockplan links to schools; we never ask a school to link to us, and nothing here implies endorsement. Facts last checked 18 October 2026.