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Kruskal-Wallis test of teacher expertise between novice, experienced, and expert teachers.
| χ2 | df | P | |
| Teacher expertise | 12.220 | 2 | 0.002 |
| Knowledge structure | 4.547 | 2 | 0.103 |
| Teaching ability | 14.164 | 2 | 0.001 |
| Professional development agency | 12.220 | 2 | 0.000 |
