Student earns extra credit

2k | 26:15

3k | 17:51

12k | 10:11

28k | 8:12

63k | 7:45

65k | 17:51

102k | 8:12

113k | 10:52

166k | 6:15

167k | 8:12

195k | 7:04

208k | 5:48

319k | 12:25

347k | 7:24

377k | 7:24

418k | 8:00

432k | 32:42

23k | 14:16

170k | 6:10

171k | 6:10