no idea.
I can only think of 2 reasons.
1) There are fewer captains than the number required by GCAA. As a result each captain is flying 1.5 hours more than what is the law.
2) They just want to pass students so that they can go to the next stage and give Alpha more money. At the end when they will complete the training the weaker students who crashed for example may not get a job
I do not know. I have no contact with these students who crashed so I could be wrong. But, knowing alpha I would not be surprised if I am right!