Horry County police arrested Harlan Howard Bell, 18, Wednesday for bringing a stun gun to the Academy for Technology and Academics on Highway 701 North.
Horry County Police Sergeant Robert Kegler said it is not clear at this time why Bell was in possession of the stun gun.
Carrying a weapon on school property is a felony.
Investigators say the make of the stun gun Bell had in his possesion is the Touchdown 5000000. On a website that sells the stun gun, it says the gun can shoot up to five million volts into a person.
Bell was booked at the J. Rueben Long Detention Center Wednesday afternoon.