| Assessment Period/Time | Grade Level | M | SD | SEM | Min | Max | Skewness | Kurtosis |
| January 2020a | 3 | 470.49 | 50.04 | 2.08 | 331.00 | 681.00 | 0.07 | 0.12 |
| August 2020 | 4 | 475.66 | 52.31 | 2.17 | 333.00 | 688.00 | 0.09 | 0.22 |
| January 2021 | 4 | 486.78 | 54.24 | 2.25 | 224.00 | 691.00 | −0.27 | 1.30 |
| May 2021 | 4 | 495.64 | 55.57 | 2.31 | 304.00 | 709.00 | −0.12 | 0.11 |
| August 2021 | 5 | 491.64 | 56.63 | 2.35 | 304.00 | 712.00 | −0.07 | 0.10 |