TC
The Costello School
Basingstoke·South East·Academy
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SecondaryAcademyAges 11–16Co-edNone
The Costello School is a secondary academy in Basingstoke, South East. It has not yet been rated by students on y.school. Be the first to rate this academy and help other students and parents understand what the school experience is really like.
In terms of academic performance, The Costello School has a Progress 8 score of -0.03 (below the national average), an Attainment 8 score of 46.3, 66% of students achieving grade 4+ in English and Maths.
The school has 1,222 pupils on roll, a teacher turnover rate of 25.7%, 12% of pupils eligible for free school meals, an overall absence rate of 8.9%.
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.
The Costello School has a Progress 8 score of -0.03, which is below the national average of 0. Progress 8 measures how much progress students make between the end of Key Stage 2 and their GCSE results, compared to students with similar starting points nationally.
The school's Attainment 8 score is 46.3. Attainment 8 measures the average achievement of students across 8 qualifications including English, Maths, three EBacc subjects, and three open group qualifications.
66% of students at The Costello School achieved grade 4 or above in both English and Maths GCSEs.
The Costello School has an overall absence rate of 8.9%. The national average for secondary schools is approximately 5.5%.
The teacher turnover rate at The Costello School is 25.7%. This measures the percentage of teachers who left the school in the past year.
The Costello School has 1,222 pupils on roll.
12% of pupils are eligible for free school meals, which is used as a proxy for socioeconomic disadvantage.
Source: Department for Education, Ofsted. Data shown for context only — does not influence the Student Score.
Data last updated: April 2026
The Costello School was rated "Good" by Ofsted following an inspection in November 2021 (4 years ago). Based on Ofsted's inspection cycle, The Costello School is overdue for reinspection.
A "Good" rating means Ofsted found the school provides a high standard of education across all areas assessed. Around 65% of schools in England are rated Good, making it the most common rating.
Note: From November 2025, Ofsted replaced single-word judgements with detailed report cards covering multiple categories. While The Costello School's rating shown above was awarded under the previous system, Ofsted now provides more granular assessments. For the most up-to-date inspection information, check the school's report card on the Ofsted website.
Ofsted data is displayed for context only and does not influence the Student Score. For the official Ofsted report, visit reports.ofsted.gov.uk.
Crime Nearby
269/mo
Within ~1 mile (Police.uk)
Violent Crime
104/mo
39% of total
Air Quality
Good
NO₂: 9.9 µg/m³ · PM2.5: 6.7
Bus Stops
5
Within 500m
Nearest Station
Basingstoke Rail Station
1.0km away
Source: Police.uk, DEFRA UK-Air, DfT NaPTAN. Based on the school's location — actual conditions may vary.
The Costello School has not updated their profile
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Other schools in the Basingstoke area
This inspection was 4 years ago. Schools are typically re-inspected every 4 years — this rating may no longer reflect the current school.
Quality of Education
Good
Behaviour & Attitudes
Good
Personal Development
Outstanding
Leadership & Management
Good
Source: Department for Education / Ofsted. Data shown for context only — does not influence the Student Score. Small schools may show extreme percentages due to small sample sizes.