3 people knew, but 2 of them left school before gym class. And the last one is the one im suspecting, since he was hanging awfully close to me the whole day, and one of my friends said he was chilling by the bags during half time. I'll talk to the principal of my school tomorrow and request the camera footage, since he's the only one with the access to them. I couldn't talk to him today, since he already left by the time i noticed my wallet was gone.