I just came across this discussion and wanted to add some additional insights that I don't believe was mentioned previously. (I graduated from USMA in 1976).
Part of the Thayer Method is for cadets to "take boards." After an initial period of instruction and Q&A, the cadets in the classroom go to a section of the chalkboard (now marker boards). (Each has his/her own section of the board.)
The cadet is given a problem to solve. S/he then solves the problem on the board showing all steps of their work. Next, the cadets "recite" on their work, i.e., explain to the classroom their problem-solving methodology and how they got their answer.
So, yes, the cadet is responsible for doing the homework, but the evidence of that is demonstrated in class in front of your peers every day. This method helps ensure the cadet masters the material, can think quickly on their feet, and develop both their skills of persuasion and presentation.
Finally, this provides the chance, in today's world, for the problems on the board to be photographed with one's smartphone and thus have a portfolio of additional solved problems to study for the quizzes and exams. When I was a cadet, most classes had a daily 5-10 minute quiz or at least once a week. That way, the material is learned in an ongoing consistent manner and not in a one-night exam cramming session where the exam is 50% of your grade.
As a cadet, the last thing I wanted was to be given a problem that I had to solve in front of my peers and not be able to at least give it a good go. To stand there with a blank markerboard was quite embarassing; something you worked hard to avoid. Next, I wanted to be able to know the material well enough that I would feel confident explaining my work. On the battlefield, a leader must explain to his/her soldiers what needs to be done to win the situation at hand, then rely on those troops to go execute. The classroom training helps us be prepared to be better leaders in the field with real world problems.