as a form of "punishment"
actually
there are many other options other than beating
1. standing in low horse stance for 30 min
2. wipe or mob the floor of a dojo or dojang or dao chang.
3. standing on your hands
4. 100 pushups
5. running around dojo 25 times
6. face the wall and think about your mistakes
---
or just leave the school for the day
--
a ticket, a warning,
---
buying the whole class ice creams
--