A former high school social studies teacher on Tuesday reached a plea deal on charges that she had sex with one of her students.

Nicole Barnhart, 35, is accused of having sex with a 16-year-old male student at Ponderosa High School in Parker. She was arrested in March.

Barnhart has accepted the plea offer made by prosecutors and will plead guilty to felony sexual assault on a child and to felony criminal attempt to commit sexual assault on a child.

As part of her plea agreement, Barnhart will be sentenced to two years in prison and have at least 10 years of intense supervised probation. She will also have to register as a sex offender.

Barnhart will officially enter the plea on Jan. 3 in Douglas County and will remain in custody until that time. Sentencing will be about eight weeks after the plea.

The investigation had revealed that Barnhart, who is married, had sexual relations with the boy on more than one occasion, according to the Douglas County Sheriff's Department.

Friends of the boy said that he told them he had been having a sexual relationship with the teacher for at least two weeks and was text-messaging her. They said he told them that he thought the teacher was "hot" and he had a crush on her.

Barnhart was hired in the Douglas County School District in 1995 and had been a teacher at Ponderosa High School since August 2002.

She resigned after her arrest.