Schools in the US were designed to prepare kids for factory jobs initially. A lot of the structure related to that has changed but the amount of time you spend at school hasn't. Realistically you'd want a kid to spend less time at school. But schools are now used to prepare kids for working all day and then giving up their free time to their employer. That may be a little tin hat-ie, but it's at least partially true. However as a kid a few extra hours at school wouldn't have cut it for me. I preferred to do my work at home, I was also super distractible because I had adhd. Additionally as others have said that just wouldn't be feasible for a lot of kids/families.
But you have to choose the instance you're searching, that's the opposite of what I want, I want to search all instances, or at least the top 100 or something, all at once