Hi, Siddhan
I know you wanted an answer in about 200 words, I am sorry due to an urgency I am anwering only the main part of answer. You may write it in brief & add some more points in answer. 
every year at least 30 or more classroom desks are damaged because of irrresponsible behaviour towards school property. The problem can be trackled by installing cameras and having a watch on the students. The one who is found suspected in the work shall be punished. by this there would be fear in other students not to do so. the problem may  be trackled.
Your friend
Firstly, it's the responsibility of the students not to damage the classroom desks. They must behave properly. It's also a responsibility of school that they must create awareness on loss of damaging school's property. May u liked it.