View the Department of Education’s Performance Tables for Portal House School.
Academic Achievement KS4
| GCSE performance | 2019 | 2020 | 2021 | 2022 | 2023 |
| Number of year 11 pupils | 9 | 19 | 20 | 19 | 20 |
| % 9-4 English & Maths | 13% | 47% | 15% | 11% | 10% |
| % 5+ Standard passes including English + Maths (9-4) | 0% | 26% | 15% | 0% | 10% |
| % 5+ standard passes (9-4) | 0% | 47% | 15% | 0% | 10% |
| % 5+ accreditations | 18% | 73% | 80% | 68% | 70% |
| % any accreditation | 30% | 90% | 95% | 95% | 95% |
| Attainment 8 Average | 15.1 | 25.32 | 22.15 | 18.8 | 15.73 |