Robert Skalla of Janesville is charged with third-degree sexual assault. He's been released on a signature bond.
The 39-year-old instructor is accused of indecently touching an 18-year-old Blackhawk Tech student March 6 at a Madison hotel.
He was the adviser to a team of students who were attending a conference of the Wisconsin Marketing and Management Association.
Brian Gohlke is the school's director of human resources.
He says the college conducted an investigation after it received a complaint from the student, but it took no disciplinary action because Skalla had resigned.
Skalla had taught there for four years.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or email@example.com.