Auburn Adventist Academy has fired teacher, Scott Spies, and is now helping the teenager.
School administrators called investigators after hearing rumours that Spies had a relationship with a student in his Bible Study class.
According to the teen, the relationship was going on for a year. Police also believe Spies had sex with the teen on 15 occasions.
Auburn Academy Principal, Dr. Marvin Mitchell, says it was a betrayal. He says there are counsellors trying to help the teen and other students.
Police are holding Spies on $150,000 bail for investigation of molestation, indecent liberties and sex with a minor.