annodomini
Our school lunch hour was 12.30 to 13.50 which gave us time to go home and back if we didn't take school dinner. When I started secondary school I was able to cycle though my sisters had to walk. Plenty of exercise for us as it was about 1km each way. Oh and we always had a 15 minute break in mid afternoon which allowed the (male) teachers to have a quick smoke.
I'd forgotten the smoking! Open the door to the men's staff room and the smoke billowed out into the corridor. You couldn't see across the room for it.