Earlier quoted context omitted.
Germany: Most (all?) cities have special tickets for pupils. There are separate bus lines in the morning which pick up the pupils from the bus stops and take them directly to school. In the afternoon there are some special lines too, otherwise you just take a normal line with your pupil ticket. That's at least how it worked in my time, like 20+ years ago.
I just walked to school. I never needed to take a bus or the car except when I lived far in the countryside. I'm talking about Spain. Anyway schools sometimes have their own bus, parents pay a private company so the bus takes the students either from their home or very close. In the uni there was special bus lines that went around all the city to the campus.
I know this from my university city, too. It was arranged that way so that students would not overcrowd the normal bus lines.