They were cited for underage drinking at an off-campus establishment Friday night.
Pennsylvania State Police, acting on a tip from Lower Merion Police, raided the IA Social Club on the 6600 block of Haverford Avenue.
They cited nearly 500 students for drinking underage. PSP-Philadelphia corporal Jonathan White says several people were arrested, including the owner of the social club.
Police said the party had been planned on the website MySpace. The students set up buses to take them to and from the club.
