Table 3 Effect size estimates by reported grade level
Grade level | # Of effect estimates | Overall effect | SE | Lower | Upper | p |
|---|---|---|---|---|---|---|
5th Graders | 5 | 0.09 | 0.45 | − 0.78 | 0.97 | 0.838 |
6th Graders | 4 | 0.27 | 0.40 | − 0.51 | 1.05 | 0.499 |
7th Graders | 10 | 0.34 | 0.18 | − 0.01 | 0.68 | 0.054 |
8th Graders | 10 | 1.55 | 0.32 | 0.92 | 2.19 | 0.000 |
Multiple grades | 1 | 1.17 | 0.13 | 0.91 | 1.43 | 0.000 |