An Indiana teacher whose comment that she believes gays have no purpose in life has been suspended amid tighter security at her school.
 
  Superintendent Mark Baker of the Northeast School Corp. in western Indiana’s Sullivan County issued a statement Wednesday saying the teacher has been placed on administrative leave and that state and local police are stationing officers at North Central Junior-Senior High School as a precaution because of “aggressive” email messages sent to the school and the teacher.
 
  Baker’s did not identify the teacher, but special education teacher Diana Medley’s comments have circulated widely on social networking sites amid news coverage of an alternative prom dance at a nearby school that would ban gay students.
 
  Medley has no published telephone number and she couldn’t be reached for comment Wednesday.