Did you ever do this? Did you get caught?
When I got to age 14 (going on 15) I used to bunk off about every couple of months.
The system was that you went into your “own” class for registration morning and afternoon. Then you went off to whatever class you were timetabled for. It was assumed that you would then go where you were supposed to go. Even if s/he noted your absence the teacher of that class would take it for granted that as registration had occurred any absences were noted and dealt with. With the corridors filled with kids on the move to their respective classes it was easy to hide in the toilet and then sneak out as soon as it was quiet.
We only ever bunked off in the afternoons. Two of us had working mothers, so we took it in turns to go to one another’s houses. Occasionally we got the bus into the city and walked around the shops. Only once were we ever challenged by a nosy sales assistant as to why we were not in school. We told her that we had been sent to purchase supplies for our final year sewing project and of course we were believed. We were both top of our class in several subjects and knew that we were not going to fail our GCE. We planned our absences carefully so as to fly under the radar.
As soon as the GCE results came out there seemed very little point in going into school so we bunked off even more. There were no smart phones or email back in the late 1950s/1960s for the school or our parents to keep track of us. So we mainly got off with it.
Anyone else fed up with North Easterly wind flow?