Author | No. of Students | Teaching context |
| 50 | China |
| 35 - 100 | Not mention |
| around 80 | China |
| 60 - 150 | China |
| 300 - 1000 | Not mention |
| 70 | Uganda |
| above 40 | Japan |
| above 60 | Developing countries |
| 40 | Kenya |
| above 35 | US |
| 25 - 30 | UK |
| 40 - 50 | Not mention |
| 70 - 80 | China |
| 60 | China |
| around 60 | China |
| 50 | China |