OMAHA, Neb. (AP) — A former Omaha teacher accused of having a sexual relationship with a former student of his is scheduled to be sentenced next month for sex assault.

Online court records say 36-year-old Brian Robeson made a deal with prosecutors and pleaded guilty to sexual assault of a minor. Prosecutors had lowered the charge and dropped another in exchange for Robeson’s plea. His sentencing is set for Oct. 11.

Robeson was a math teacher at Davis Middle School. Authorities say the relationship began when the girl was 13.