The Buckinghamshire Secondary Transfer Test (STT). Qualifying score is 121. Whizlo's adaptive mocks mirror Bucks 11+, with instant marking, percentile ranking and an AI tutor for every wrong answer.
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Know exactly what your child will sit — then practise that exact format.
Bucks 11+ sets the Buckinghamshire 11+. Whizlo mirrors its structure across Maths, English, Verbal Reasoning and Non-Verbal Reasoning, with timing and scoring matched to the real paper.
See where your child stands against the schools you're aiming for.
Amersham (boys)
Aim for ~88% on a mockVery oversubscribed — aim well above the 121 pass mark.
Little Chalfont (girls)
Aim for ~88% on a mockHighly selective intake.
High Wycombe (boys)
Aim for ~85% on a mockHigh Wycombe (girls)
Aim for ~82% on a mockAylesbury (boys)
Aim for ~80% on a mockAylesbury (mixed)
Aim for ~78% on a mockIndicative only — real cut-offs vary each year.
Everything your Buckinghamshire 11+ prep needs, in one subscription.
The Buckinghamshire Secondary Transfer Test (STT). Qualifying score is 121. In practical terms that means your child sits Bucks 11+, testing Maths, English, Verbal Reasoning and Non-Verbal Reasoning. Whizlo configures its mock papers to match this format so practice mirrors test day.
Most families in Buckinghamshire begin in Year 4 or early Year 5, giving 12-18 months of steady practice. Whizlo adapts to your child's current level, so starting earlier simply means a more gradual build-up rather than last-minute cramming.
Whizlo's mocks mirror the Bucks 11+ structure, timing and question types. Each mock is auto-marked with an instant percentile so you can see how your child compares, plus indicative benchmarks for Buckinghamshire grammar schools such as Dr Challoner’s Grammar School and Dr Challoner’s High School.
Whizlo tracks readiness against well-known Buckinghamshire selective schools including Dr Challoner’s Grammar School, Dr Challoner’s High School, Royal Grammar School, with an indicative "aim for" percentage on each mock. Real cut-offs vary every year, so we treat these as motivating guides rather than guarantees.
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