Appropriate pick up time for kids after school?

I wanted y’alls opinions on this matter, because people don’t think that it’s a real issues that kids are staying two to three hours after school just because their parents won’t come pick them up, and they don’t live within a walking distance.

For example, I’m a senior in high school that’s currently in the foster care system. My foster parents usually don’t come to get me until 5o’clock or later when I get out of school at 3:20. My foster home is a 45 minute drive from my school, and I have no other options.

I just wanted to see if anyone else thought there was something to this or not. Because experiencing this first hand, isn’t too fun.