As a new and growing school, Cornerstone will not have any Year 6 (Key Stage 2) data until summer 2019.
2017-2018
Year R
| Good Level of Development | Reading | Writing | Number | |
| Cornerstone | 80% | 83% | 80% | 87% |
| National | 72% | |||
| Hampshire | 77% |
Phonics
| Year 1 | Year 2 | |
| Cornerstone | 87% | 97% |
| National | 83% | |
| Hampshire | 85% |
Year 2 (Key Stage 1)
| Reading | Writing | Maths | ||||
| Expected standard | Greater Depth | Expected standard | Greater Depth | Expected standard | Greater Depth | |
| Cornerstone | 87% | 23% | 87% | 17% | 90% | 27% |
| National | 76% | 26% | 70% | 16% | 76% | 22% |
| Hampshire | 81% | 33% | 74% | 20% | 79% | 26% |
2016-2017
Year R
| Good Level of Development | Reading | Writing | Number | |
| Cornerstone | 79% | 93% | 86% | 86% |
| National | 71% | |||
| Hampshire | 76% |
Phonics
| Year 1 | Year 2 | |
| Cornerstone | 83% | 100% |
| National | 81% | |
| Hampshire | 82% | 64% |
Year 2 (Key Stage 1)
| Reading | Writing | Maths | ||||
| Expected standard | Greater Depth | Expected standard | Greater Depth | Expected standard | Greater Depth | |
| Cornerstone | 93% | 28% | 79% | 10% | 86% | 21% |
| National | 76% | 25% | 68% | 16% | 75% | 20% |
| Hampshire | 82% | 34% | 74% | 20% | 79% | 25% |
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% |