PITTSBURGH -- A former Moon Area High School teacher charged with several sex crimes against a student has pleaded guilty.

Beth Ann Chester was a freshman physical education teacher until she resigned on Dec. 27 after police said she confessed to having sex with a 14-year-old student in a car in a parking lot.

As part of the plea deal, Chester will spend 18 to 36 months in prison.

When police learned of the accusations, they seized the student's cell phone and Chester's computer as evidence in the case.

Chester was charged with endangering the welfare of children, corruption of minors, sexual abuse of children, unlawful contact with a minor, criminal use of a communication facility and criminal solicitation.