This case could cause various problems like :-
1. Destroying unity among the students in class.
2. Innocent student could be proved wrong and may the wrong one would be left lone.
3. Students may stop believing their friends on any case.
4. If the case spreads out of school , the school reputation may also be affected.
5. If the amount is high, then student may be taken to police.
6. Other students in school may also fear of bringing any money to school.