Does writing on school desks or vandalizing a small part of their floor necessitate paying compensation to the school, and how is this compensation estimated?

Assaulting private or public property necessitates guarantee and compensation, even if the assault is minor, such as writing on a table or vandalizing a school floor. The value of the damage must be guaranteed and paid to the responsible party, unless they permit and forgive him. The estimation of this value is to be referred to experts.