A high school math teacher accused of putting his hand inside a female student's waistband while they were alone inside of a classroom has a history of alleged inappropriate behavior at other Connecticut school districts, according to court documents. Darien High School teacher Sean Boardman, 59, of Westbrook, was arrested on January 30 in connection with the alleged incident involving the student, which was reported to have occurred while he was tutoring her in November, according to authorities, WFSB reported.