The (apparent?) trend to self study for Ground Training is madness on every level.
Arguably each of the Ground School Subjects can stand about 2 full days in the classroom, plus some directed self study. There are solid grounds for insisting students attend this training.
Scheduling school and instructor time on a rolling basis is the way to go... irrespective of the flying programme.
If the courses are scheduled students will find the time to attend.. and pay the going rate. Those that can`t are subject to "Instructor Consultancy Fees" ie It's cheaper for them to attend the scheduled classes.
There are solid commercial benefits for the school and the instructors.
I appreciate no one will agree with me because "It's not the way it's done."