Teacher told students that Obama is the antichrist?

my nieces go to a very good catholic school and one of the teachers at the school told her cl of eighth graders that Obama was the antichrist last year but yet she wasnt fired, then the day after the election all the black girls in the school sat in a big circle at lunch and some of the upper cl men yelled at a couple of freshmen who refused to join their group, but just the day before (on election day) a white girl posted as her status on facebook n*gga its called the white house for a reason (which i agree is wrong and uncalled for) but the black girls got offended and all got excused from afternoon cles and got to sit in the guidance, now i understand this election is/was a very big deal for the african race but i think this school is being a bit ridiculous about it all dont you agree?