Getting home is a big issue for a lot of families. School ends around 3 pm, but most kids do some sort of after school activity like a sport to bridge the gap until after 5 pm when a parent can come through the pickup line. Growing up, there was also just general “after-school” programs. Basically just day care for after the school day that would cost extra.
most schools are located near public transportation and even if there are no bus stops near the home it is generally easy enough for kids to get to their parent's office/rec center/ friend's house etc. basically you have a lot more options when everyone is no longer rushing to be at work or school