Volusia County deputies came up with the idea for the sting after students repeatedly reported thefts within the boys' locker room.
The suspected thefts were happening inside the locker room and cameras couldn't be used, so an ultraviolet theft-detection kit was utilized. During the operation, students were given marked bills to put in their wallets that were photocopied and coated with UV powder.
After some failed attempts, Barnes was reportedly caught fluorescent yellow-green-handed when a UV light revealed powder on both of his hands after some bills had gone missing, News 13 reported.
Barnes told Local 6, "I made a mistake," and said he does not plan on returning to the school.
Volusia County Schools issued this statement on Tuesday:
"Mr. Barnes has been instructed by administration to not return to the school until he has met with the Professional Standards office and disciplinary action has been determined."