Danny Brian Giacomo, 37, pleaded guilty Monday in Muskogee County District Court to sexual assault charges filed here and in Custer County.
He was sentenced to serve six years in prison and 29 years on parole.
Giacomo resigned his position at Hilldale on Nov. 24, 2006, the day before charges were filed involving a 15-year-old student. Charges involving a 14-year-old were filed in January 2007.
Giacomo was charged in Muskogee County with eight sex-related felonies and one misdemeanor.
