Former Grantsburg teacher charged with criminal sexual conduct
STILLWATER, Minn. - A 36-year-old Stillwater, Minn., man and former Grantsburg High School history teacher is facing charges of criminal sexual conduct for having sex with two Grantsburg female students, ages 15 and 16, at his Stillwater home in 2012.
Matthew Robert Koenen, 36, allegedly started one of the relationships on a school trip to Washington, D.C., for the National History Day competition. His wife, also a history teacher at Grantsburg, was on the trip with the group.
One student told authorities Koenen had sex with her while his child was taking a nap in August of 2012. She eventually stopped seeing him after realizing the relationship was wrong.
Koenen allegedly used three different email accounts and two different cell phones to communicate with the students. Forensic analysis of his cell phones and computer shows "countless" messages between him and the juvenile, many romantic in nature.
During their investigation, authorities found that two other female students had been to Koenen's home while his wife was away in 2012. Koenen started a relationship with one of those students in May of 2012. He had offered her help to improve her grades and their conversations eventually turned sexual.
Grantsburg School Superintendent Joni Burgin said she could not comment on the case as it's a personnel matter.
According to the Stillwater Police:
"Back in September 2012, there had been a report to Grantsburg High School that the defendant had been engaging in an inappropriate relationship with (alleged victim 2) in 2012. The matter was immediately referred to two law enforcement authorities (both the village of Grantsburg Police and the Burnett County Sherriff's department) who assisted school officials in the investigation.
"(Alleged victim 2) denied the nature of the relationship to protect the defendant; however, the defendant admitted to school authorities that he had exchanged text messages of a personal nature with (alleged victim 2).
"The defendant was then asked to resign from his position. He resigned on Sept. 7, 2012, which was at the very beginning of the 2012-13 school year (18 months ago)."
The charges, filed in Washington County, Minn., carry a maximum penalty of 15 years in prison, a $30,000 fine or both, if convicted. - with information from Stillwater Police Dept. and KARE 11.com