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Portsmouth, South East
The Portsmouth Grammar School is an all-through independent school in Portsmouth, South East.
Government data shown for the 2024/25 academic year
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The Portsmouth Grammar School is an all-through independent school in Portsmouth, South East. It has not yet been rated by students on y.school. Be the first to rate this independent school and help other students and parents understand what the school experience is really like.
In terms of academic performance, The Portsmouth Grammar School has an average A-Level grade of B+.
The school has 487 pupils on roll, 0% of pupils eligible for free school meals.
After leaving The Portsmouth Grammar School, student destinations include 75% going on to university and 1% entering apprenticeships.
All student scores on y.school are calculated from anonymous ratings using a transparent, deterministic methodology. Scores are freshness-weighted (18-month half-life) and include confidence tiers based on sample size, diversity, and consistency. For full details, see the y.school methodology.
Profile completeness: 4 of 8 data domains · Partial coverage
8.5
Excellent
/ 10
Data Score
Computed from 6 government data points. Not based on student reviews.
Source: DfE / Ofsted · context onlyGovernment data is shown for context and does not influence the student-review Student Score. Small schools can show extreme percentages from small sample sizes.
Independent school data note
Independent schools often sit IGCSEs, which DfE performance tables don't count. Because the resulting Attainment 8 / Progress 8 / EBacc figures systematically understate actual results, they are not shown for independent schools. A-Level and destination data is unaffected and shown in the tabs above.
Latest government data shown is for the 2024/25 academic year; some figures cover earlier years.
Independent school — inspected by the ISI, not OfstedMost independent schools are inspected by the Independent Schools Inspectorate (ISI), not Ofsted, so no Ofsted rating is published here. The results and intake data above still come from the DfE.
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The school's Attainment 8 score is 42.9. Attainment 8 measures the average achievement of students across 8 qualifications including English, Maths, three EBacc subjects, and three open group qualifications.
Students at The Portsmouth Grammar School achieve an average A-Level grade of B+. This metric covers all A-Level and equivalent qualifications taken at the school.
The Portsmouth Grammar School has 487 pupils on roll.
0% of pupils are eligible for free school meals, which is used as a proxy for socioeconomic disadvantage.
28% of pupils receive SEN (Special Educational Needs) support or have an Education, Health and Care plan.
After leaving The Portsmouth Grammar School, 75% go on to university and 1% enter apprenticeships.
Based on the latest government data. Every child is different — use this as a starting point, not a verdict.
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Matched on the share of disadvantaged pupils plus special-needs, English-as-an-additional-language and school size — so you can compare like with like, not just by postcode.
National percentiles (100 = best) for the area around the school · 5/5 measures · Police.uk, DEFRA, NaPTAN, DfT STATS19, MHCLG IoD 2025.
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