We had them too but at least for me in elementary school I didn't really care what time it was. I remember I knew what position on the clock meant school was done but other then that didn't really need to read it cause the teachers would just bring us as a class to whatever our next class was for that day. By the time I got old enough to start caring smartphones were prevalent enough that I never really needed to learn how to read a clock. It wasn't until highschool where teachers got more strict about enforcing no phones out in class that I then learned how to read clocks so I could know when class would be done.