Rafael Tellez is charged with indecency with a child by sexual contact.
According to an arrest affidavit, a girl reported that Tellez grabbed her chest at least 10 times.
She says she would try to walk away but he would follow her and continue to grab her.
Police say the principal at Pathway's High School said he saw the assaults on surveillance video but they had been recorded over.
Officers say when they interviewed Tellez, he admitted to grabbing the girl but thought he did it just once.
He says if he did it more than once that it was an accident.
Authorities say records show Tellez has a record of sexually abusing children in foster homes and say Tellez told them he'd been to sex offender rehabilitation camp when he was 17 but this was the first time he offended since.
Tellez is being held in the Wichita County Jail without bond.
Copyright 2016 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.