WMBD reports.Johnson’s bullying behavior has been going on for years, according to some. She once taught a class called American Problems and is now a part-time French teacher at the school.“Kim Johnson shared with our class that she thought being gay was a choice,” Andrew Irwin, who was in Johnson’s American Problems class in 2009, told WMBD in an interview this week.“I remember comments being made like, if you were gay that was because you were unwanted in your parents’ womb,” said another former student, who declined to be identified.