| Mark | Control Group | Experimental Group | ||
| Frequency | Percent Distribution | Frequency | Percent Distribution | |
| 0 | 2 | 1.5 | 0 | 0 |
| 1 | 15 | 11.2 | 0 | 0 |
| 2 | 8 | 5.9 | 3 | 2.2 |
| 3 | 25 | 18.5 | 8 | 6.0 |
| 4 | 62 | 45.9 | 35 | 25.9 |
| 5 | 22 | 16.3 | 47 | 34.8 |
| 6 | 1 | 0.7 | 42 | 31.1 |
| Total | 135 | 100 | 135 | 100 |