If your kids are home from school around 3pm, I assume they do homework sometime shortly after getting home but after that, what do they do till dinnertime? Do they just watch TV or go on devices? We have always made them read or do activities like football/basketball outside, lego or art. They are really unhappy about that as they get older. But either they have evening activities (2-3 times a week sport) or nothing and they would just then do screens for even more hours if we let them after school too. What on earth do kids who come home after school do with their time?