Of course, those who went to any boarding establishment may have different experiences to relate to. I expect getting caught red-handed was a bit easier there.
I do not believe anyone had my school felt or was humiliated by the need to present their buttocks for punishment. How else could you be caned?
Some certainly felt embarrassed at being found out doing something childish or underhand or sneaky. Some may have felt embarrassed by being treated as a naughty schoolboy when they thought they had outgrown this state.