superme: Since lockers are the property of the school and the school specifically instructed students to not put locks on the locker in order for the school to excercise their absolute right to conduct locker searches, as a result it is the school’s responsibility should items come up missing. Unless the school specified IN WRITING that no student may keep anything in a locker overnight OR no money may be kept in a locker at any time, they are responsible for maintaining the safety and property of all students.
Therefore, unless the school had the above clause in writing, YOU are not liable for the money.
Call Rav Dovid Cohen at Gvul Yaavetz in Flatbush. He is R’ Choshen Mishpat.