Ark Ayrton Primary Academy vs St John's Cathedral Catholic Primary School
A head-to-head comparison of two primary schools in South East, England, 406 m apart, using official English 2025 data. The better value in each row is highlighted.
Ark Ayrton Primary Academy
Portsmouth · Academy primary · Ages 2–11
495 students
St John's Cathedral Catholic Primary School
Portsmouth · Local authority primary · Ages 3–11
237 students
| Measure | Ark Ayrton Primary Academy Portsmouth, South East | St John's Cathedral Catholic Primary School Portsmouth, South East |
|---|---|---|
| Success Index (England) | 54 Top 50% | 76 Top 25% |
| Region rank | #1252 of 2,471 | #515 of 2,471 |
| National rank | #7116 of 15,697 | #2754 of 15,697 |
| Sector | Academy | Local authority |
| Type | Primary | Primary |
| Year range | Ages 2–11 | Ages 3–11 |
| Students | 495 | 237 |
| Pupils on roll | 495 | 237 |
| Free school meals | 62.8% | 26% |
| Capacity filled | 97.1% | 112.9% |
| KS2 expected standard (RWM) | 78% | 83% |
| KS2 higher standard (RWM) | 5% | 13% |
| KS2 reading progress | – | – |
| KS2 writing progress | – | – |
| KS2 maths progress | – | – |
| Attainment 8 | – | – |
| Progress 8 | – | – |
| Grade 5+ English & maths | – | – |
| Grade 4+ English & maths | – | – |
| EBacc average points | – | – |
| A level points per entry | – | – |
| town | Portsmouth | Portsmouth |
| region | South East | South East |
| Website | www.arkayrtonprimary.org/ | www.stjohnscathedralschool.org.uk/ |
The verdict
- •St John's Cathedral Catholic Primary School scores higher on the Success Index (England) (76.4 vs 53.9).
- •St John's Cathedral Catholic Primary School does better on ks2: reading, writing & maths expected standard (83% vs 78%).
- •St John's Cathedral Catholic Primary School does better on ks2: higher standard (13% vs 5%).
- •Ark Ayrton Primary Academy is the larger school with 495 students compared with 237.
- •Ark Ayrton Primary Academy is a academy school while St John's Cathedral Catholic Primary School is a local authority school, so fees and admission rules differ.
The Success Index (England) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
Free academic assessment
Torn between two schools? Start with your child.
Whichever you choose, a free Success Tutoring assessment shows exactly where your child is in English and Maths and how to get ahead before the next school year.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Frequently asked questions
Is Ark Ayrton Primary Academy better than St John's Cathedral Catholic Primary School?
On the Success Index (England), St John's Cathedral Catholic Primary School ranks higher (76.4 vs 53.9 out of 100). The index is built from published results and context data, not from teaching quality or fit, so visit both schools before deciding.
How far apart are Ark Ayrton Primary Academy and St John's Cathedral Catholic Primary School?
About 406 m in a straight line, between Portsmouth and Portsmouth in South East.
Which has the better Pupils on roll?
Ark Ayrton Primary Academy: 495. St John's Cathedral Catholic Primary School: 237. Number of pupils in the latest school census.
How do Ark Ayrton Primary Academy and St John's Cathedral Catholic Primary School rank in South East?
Ark Ayrton Primary Academy is 1252nd of 2,471 and St John's Cathedral Catholic Primary School is 515th of 2,471 among primary schools in South East on the 2025 Success Index (England).