Table 1.
Number of classes in each grade by group
| Number of classes | ||
|---|---|---|
| Grade | Experimental | Control |
| 4 | 3 | 1 |
| 4/5 | 2 | 2 |
| 5 | 2 | 0 |
| 5/6 | 2 | 1 |
| 6 | 2 | 4 |
| 7 | 3 | 1 |
| 7/8 | 1 | 1 |
| 8 | 4 | 1 |
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