St Mary's Catholic School · Avanti Grange Secondary School — the academic year each figure refers to is shown beside it.
| St Mary's Catholic School 📍 East Hertfordshire | Avanti Grange Secondary School 📍 East Hertfordshire | |
|---|---|---|
| Location | East Hertfordshire, Hertfordshire | East Hertfordshire, Hertfordshire |
| Type | Academy converter | Free schools |
| Phase | Secondary | Secondary |
| Inspection | Ofsted: Good (8 October 2024) | Ofsted: Outstanding (7 May 2025) |
| Pupils | 1,121 | 464 |
| Free school meals | 8.6% | 10.6% |
| Religious character | Roman Catholic | None |
| Gender | Mixed | Mixed |
| Attainment 8 | 57.6 (2024-25) | — |
| Progress 8 | +0.43 (2023-24) | — |
| Grade 5+ in English & maths | 66% (2024-25) | — |
| Grade 4+ in English & maths | 89% (2024-25) | — |
| EBacc average point score | 5.33 (2024-25) | — |
| Entering the EBacc | 68% (2024-25) | — |
| Website | Visit website → | Visit website → |
Performance figures: Department for Education school performance data. Inspection ratings: Ofsted, Estyn, HMIe or ETI as applicable. View all data sources.