The Brooklyn Branch of the ISO meets most Wednesdays at 7pm at the Brooklyn Free School.

The Brooklyn College Branch of the ISO meets most Wednesdays from 7:00pm – 9:00pm in Ingersoll Hall, Room 2127.

The Barnard / Columbia Branch of the ISO meets most Thursdays at 8:00pm in Hamilton Hall at Columbia University (enter at 116th and Broadway)

The Downtown Branch of the ISO meets most Wednesdays at 7pm at the CUNY Graduate Center, Room 5414 (365 5th Ave)

The Hunter Branch of the ISO meets most Thursdays at CUNY grad center in room 5489.

The Lehman Branch of the ISO meets most Wednesdays at 6:30 PM at Lehman College, Student Life Building, 250 Bedford Park Blvd.

The NYU Branch of the ISO meets most Wednesdays at 6:30PM in the Kimmel Center at NYU (60 Washington Square South).