As a new and growing school, Cornerstone will not have any Year 6 (Key Stage 2) data until 2019.
2015-2016
Year R
| Good Level of Development | Reading | Writing | Number | |
| Cornerstone | 70% | 83% | 73% | 83% |
| National | 69% | 77% | 73% | 79% |
| Hampshire | 75% |
Phonics
| Year 1 | Year 2 | |
| Cornerstone | 90% | 100% |
| National | 81% | 91% |
| Hampshire | 83% |
Year 2 (Key Stage 1)
| Reading | Writing | Maths | ||||
| Expected standard | Greater Depth | Expected standard | Greater Depth | Expected standard | Greater Depth | |
| Cornerstone | 76% | 52% | 71% | 5% | 81% | 5% |
| National | 74% | 24% | 65% | 13% | 73% | 18% |
| Hampshire | 80% | 29% | 70% | 14% | 77% | 18% |
2014-2015
Year R
| Good Level of Development | Reading | Writing | Number | |
| Cornerstone | 83% | 100% | 83% | 90% |
| National | 64% | 76% | 71% | 77% |
| Hampshire | 73% | 82% | 76% | 73% |
Phonics
| Year 1 | Year 2 | |
| Cornerstone | 87% | 90% |
| National | 77% | 82% |
| Hampshire | 78% |
Year 2 (Key Stage 1)
| Reading | Writing | Maths | ||||
| Level 2b+ | Level 3 | Level 2b+ | Level 3 | Level 2b+ | Level 3 | |
| Cornerstone | 92% | 42% | 83% | 0% | 83% | 8% |
| National | 82% | 32% | 72% | 18% | 82% | 26% |
| Hampshire | 87% | 42% | 78% | 19% | 86% | 31% |