From: The effectiveness of an online grammar study scheme for Chinese undergraduate students
 | Set A | Set B | Set C | Set D |
---|---|---|---|---|
2018 Run (469 enrolled students) | 364 (77.6%) | 351 (74.8%) | 334 (71.2%) | 317 (67.6%) |
2019 Run (462 enrolled students) | 224 (48.4%) | 162 (35.1%) | 125 (27.1%) | 110 (24%) |