Table 1 Descriptive statistics for teacher, classroom, and student characteristics
Total sample | Intervention | Control | |
|---|---|---|---|
N (students) | 337 | 193 | 144 |
Years of teaching experience: range | 1–23 | 1–19 | 1–23 |
Years of teaching experience: M (SD) | 9.33 (7.06) | 8.90 (6.45) | 9.88 (8.18) |
Class size: M | 24.07 | 24.13 | 24 |
Student age: M (SD) | 11.61 (.59) | 10.96 (1.07) | 10.39 (0.83) |
Student gender (% female) | 51.6 | 47.2 | 59.3 |