She won't register as a sex offender, but 31-year-old Sommar Chaffee will serve jail time for inappropriate relationships with her students.

The former Hill City High School teacher, accused of having sexual contact with her students, has pleaded guilty to a lesser charge.

The state originally charged Chaffee with solicitation of a minor and exploitation of a minor, both felony offenses. But Monday her attorney pleaded guilty for her to disseminating materials harmful to a minor, part of a deal state officials say was the best they could do with the evidence they were left with.

Prosecutors say Chaffee had inappropriate sexual relationships with male students at Hill City High School, but further investigation determined while those relationships were unethical, some were not illegal.

"We had reason to believe she had sexual contact with at least three boys at Hill City High School, but they were over the age of 16 and thus of an age to consent. There's no crime there," Deputy State's Attorney Lara Roetzel said.

Roetzel says at least six teens received sexual text messages from their former teacher, but of those victims, only one was willing to cooperate with the prosecution.

"We were left to deal with a very big problem with a very small fact pattern of which to address that.  So when it's all said and done, I think we did the best that we could with the facts that we were left with," Roetzel said.

Chaffee's not teaching at Hill City High School anymore and she won't have a teaching license in South Dakota for at least three years. She'll serve two days of her 180 day jail sentence behind bars with the rest of the days suspended, and because the crime she plead to is a misdemeanor, she will not register as a sex offender.

"I mean, in the state's mind I believe it's absolutely inappropriate and she should have to register as a sex offender, but with the facts that we had, we couldn't prove an offense that would warrant that," Roetzel said.

And Roetzel says without the lone testimony of one of Chaffee's youngest victims, the state wouldn't have had a case at all.

"Without that one boy who was strong enough and his family who was strong enough to see it all the way through, we wouldn't have been able to hold her accountable at all," Roetzel said.

Chaffee will also have to pay a $400 fine and the court costs and will have continuous counseling for at least a year.