In some ways, idol training and university studies are similar: you need to learn in a new way, follow certain rules, and spend hours studying different topics or things.
When I was studying at university, I had to work hard on myself, it was especially difficult to study some subjects, especially history(I have a bad memory), so I often turned to a writing service (as other my mates do when we were overhelmed with different home assignments). Such services are still good help for students.
But there's a major difference. In idol training, if your debut isn't a hit, all that effort can feel wasted. In uni, you can still snag your degree and land a job, even if you didn't exactly top your class.