The other point being glossed over here is that higher education tuition is typically applied per term, not for an entire program. You don't get billed for four years tuition when you leave after one year - you have drop-out windows every term, and only pay for terms in which you attended.

So if LS has organized their cirriculum into "sprints", and wants to follow the standard in higher education, there would be a brief dropout window at the start of each sprint, with no ISA applied for sprints that were never started.