Since these kids don't get anything out of it, that's why they are in there in the first place

Without ASI, there would be many kids that decide that they just don't want to do their work and without consequences, these kids will not have to take up responsibility for their actions. Once their are no consequences many kids will simply say they need help with assignment after assignment, knowing that they will not get in trouble for their actions. ASI can also be a time to help kids actually accomplish getting their assignments done, and even though some kids go in there to do nothing, that's why they are in there in the first place.