Many fraternities and sororities on campus belong to the National Panhellenic Conference (NPC), Interfraternity Council (IFC), Greek Alliance Council, and National Pan-Hellenic Council (NPHC). As of spring 2010, eighteen percent of undergraduates were Greek (1146 men and 1693 women out of 17,160 total).[220] The total number of community service hours completed for the 2010 spring semester by fraternities and sororities was 51,819 hours (average of 31 hours/person).