GREELEY - A Greeley high school teacher who admitted to having a child with one of her students was sentenced Wednesday.

Rhonda Eisenberg was sentenced to 90 days in jail and four years of supervised probation. She must also register as a sex offender.

"I somehow want to find redemption and make up for the hurt that I've caused," Eisenberg told the judge Wednesday afternoon. "I'm disappointed in myself."

Eisenberg apologized for what she had done in 2010 and said as a teacher of more than 20 years, she had always wanted to "make a positive difference in other people's lives."

In court, her lawyer said that Eisenberg, a Spanish teacher at Northridge High School, wanted to help a student in her class whose parents had to return to Mexico. She agreed to become that student's guardian.

He was 17 at the time of conception of their baby girl. She has said she and the student had sex 20 to 30 times.

"This is a felony, and it ought to be a felony, and it's a serious felony," the judge said.

The judge will allow Eisenberg written and phone conversations with the victim -- the father of her child -- at the request of the victim in court Wednesday.

Eisenberg pleaded guilty to attempted sexual assault on a child - position of trust, a class 5 felony, on Jan 30.

Eisenberg can petition the court to deregister as a sex offender 10 years after the completion of her sentence, according to a spokesperson for the District Attorney's office.