text: Let's say for this example we single out one particular student, and this student's name is Generic_Name. Let's also say that Generic_Name has a hobby of creating and collecting model airplanes, to display on the shelf of his room. Generic_Name's hobby isn't a very common one, but that's okay. He prefers to build them alone, in the quiet of his room, and maybe share pictures of them online with another small group of model airplane enthusiasts. Generic_Name chooses to spend most of his free time doing this, and he enjoys it. Unless he can't, because the school just made that choice for him, and now Generic_Name has to sign up for an extracurricular activity. Generic_Name's school doesn't have a model airplane building club, as most schools don't, so Generic_Name is forced to spend his free time doing something he doesn't enjoy. He barely has any time to invest into his real hobby anymore, since he has to spend all afternoon at the chess club. As his happiness plummets, so do his grades. The school has nothing to really gain, and certainly a lot to lose, by implementing this system.