| Assessment Period/Time | Grade Level | M | SD | SEM | Min | Max | Skewness | Kurtosis |
| January 2020a | 3 | 463.46 | 48.89 | 3.76 | 322.00 | 541.00 | −0.81 | 0.27 |
| August 2020 | 4 | 477.17 | 52.77 | 4.06 | 312.00 | 592.00 | −0.83 | 0.71 |
| January 2021 | 4 | 492.56 | 48.70 | 3.75 | 347.00 | 607.00 | −0.96 | 0.99 |
| May 2021 | 4 | 507.39 | 47.81 | 3.68 | 361.00 | 635.00 | −0.72 | 0.85 |
| August 2021 | 5 | 506.06 | 44.75 | 3.44 | 340.00 | 587.00 | −1.06 | 1.66 |