HARVARD – A former District 50 school psychologist has sued two district administrators, seven current or former school board members, and an Illinois State Board of Education consultant, alleging harassment and defamation.

Peter Koehn alleges the 10 defendants harassed and defamed him and made him the subject of “adverse employment actions.”

Koehn was fired in January 2011, a few months after he was the catalyst of an Office of Civil Rights investigation into whether school administrators changed the individualized education plans of special education students without approval from the students’ parents or special education teachers.