Note: Updated to include information from Kids Voting Marathon County.

WAUSAU - A D.C. Everest Middle School teacher is accused of sexually assaulting a child a month after he was convicted of disorderly conduct and required to submit a DNA sample.

Peter T. Schmidt, 56, of Mosinee, was charged Friday with first-degree sexual assault of a child younger than 16 with the use of force, using a computer to facilitate a child sex crime, child enticement with sexual contact, false imprisonment and intimidating a victim, as well as possession of marijuana and drug paraphernalia.

Schmidt has been a teacher in the D.C. Everest School District since 1986, starting with fifth-graders. He became a sixth-grader teacher in 1989 and has been a middle school science teacher since 2002.

The district has placed him on leave and removed all his access to the schools, Superintendent Kristine Gilmore wrote in a note to parents. The charges do not involve a D.C. Everest student, she wrote.

"On the evening of August 21, the D.C. Everest Area School District was informed by the Mosinee Police Department that one of our Middle School staff members is the subject of an ongoing criminal investigation," Gilmore wrote. "Upon receiving this notification, the district immediately took appropriate actions to ensure the safety of students and staff, including locking all of the individual’s electronic equipment, disabling district key card access, and placing the individual on leave including a directive to remain off district property."

Marathon County Judge Gregory Huber ordered Schmidt to submit to a $150,000 signature bond with the first $50,000 in cash, and he remained in jail Saturday. He also was ordered not to have contact with the victim or any minors, to stay in Marathon County and to stay off the internet and social media.

Schmidt is accused of tying up and sexually assaulting a girl in his Mosinee home in August 2016 after meeting her on a social media application called Whisper, according to WSAW, which cited a criminal complaint. The girl reported the assault in May of this year, according to the report.

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The girl told police that Schmidt identified himself as "Kyle" and said he was 22 years old in his Whisper messages, and later on Snapchat said he wanted to have sex with her, the report said. The victim said her accurate age was shown on her social media profiles, the complaint said.

Officers searched Schmidt's home Aug. 21 and found almost 45 grams of marijuana, along with drug paraphernalia, the news account said.

This was not Schmidt's first trouble with the law, according to online court records reviewed by USA TODAY NETWORK-Wisconsin.

In November 2013, he was convicted of second-offense drunken driving after he was arrested that July in Green Bay.

In July 2016, he was convicted of disorderly conduct in Marathon County. He was ordered to pay about $460 and submit a DNA sample, which he submitted in August 2016. Wisconsin began requiring DNA samples for misdemeanor convictions in 2015.

Wisconsin law requires that teacher licenses be revoked for educators who've been convicted of felonies, but not of misdemeanors. The state must also revoke a license if a teacher engaged in "immoral conduct" that endangers students or involves accessing or distributing pornography.

Dean Dietrich, an attorney representing the D.C. Everest schools, told USA TODAY NETWORK-Wisconsin on Saturday that district officials had previously investigated Schmidt's conduct.

"I think that they were aware of some issues with him and they were reviewed at the time," he said.

Dietrich would not discuss the details of those concerns or whether Schmidt had ever faced discipline.

"Any time that the school district in general becomes aware of conduct by a teacher during off-duty, it's always looked into to determine whether it has a connection or relationship to work being done by the employee in the school district," he said.

The attorney confirmed that Schmidt will not be allowed back into the schools while his case is pending.

Schmidt has been a licensed teacher in Wisconsin since 1985 and received his lifetime teaching license in September 2017, according to the state Department of Public Instruction. Online DPI records do not indicate whether Schmidt has ever been under investigation but do show that he had passed background checks for renewal.

He also was a board member for Kids Voting Marathon County, a nonprofit group that encourages students to learn about the democratic process through mock elections and other activities. Kids Voting Executive Director Sharon Hunter said Saturday that the board is suspending Schmidt "until further notice," but also noted that he had not been an active member for more than a year.

"We have never been alerted to concerns arising from the teacher’s involvement on our Board," Hunter wrote in a statement to USA TODAY NETWORK-Wisconsin. "As with much of our Board, his role with Kids Voting has been historically related to attending meetings, helping to plan events, and work that did not involve direct student contact."

Schmidt's next scheduled court appearance in the child sexual assault case is a Sept. 4 preliminary hearing.