| N | Average | SD | |
2018 | Boys | 79 | 8.90 | 9.09 |
Girls | 77 | 7.46 | 9.28 | |
Total | 156 | 8.19 | 9.18 | |
2020 | Boys | 71 | 9.34 | 8.48 |
Girls | 64 | 9.13 | 7.40 | |
Total | 135 | 9.24 | 7.96 |