Police said the incident occurred in January at the man’s home in Kirkwood. They did not identify the man. No charges have been filed.
School district officials said the incident involved a student at Troy Buchanan High School.
Troy School District Superintendent Terry Morrow sent an e-mail to parents saying a teacher had been arrested for “alleged inappropriate conduct.”
The letter said the district’s procedure is to place the employee on administrative leave pending the completion of a police investigation.