rutgers university has banned fraternity and sorority house parties at its main campus for the rest of the spring semester .
the probation was decided last week , but the school announced the move on monday .
86 recognized fraternities and sororities will be allowed to hold spring formals and other events where third-party vendors serve alcohol .
last month , a fraternity was shut down because of an underage drinking incident in november .
a member of sigma phi epsilon was taken to a hospital after drinking heavily at the fraternity house during the incident .
in september , a 19-year-old student , caitlyn kovacs , died of alcohol poisoning after attending a fraternity party .