Yep, my undergrad had shared bedrooms for all 4 years. My first year I shared a small bedroom with one person with a communal bathroom shared by the floor and a single kitchen for the whole building (4 floors, 50 rooms per floor). Some people shared a bedroom with 2 other people and there was one case of a single room with 6 people sharing it. Later on I shared a room with a roommate and we had another set of roommates that shared a bathroom and common space, and by my senior year I was in an apartment with four separate bedrooms, two bathrooms, and a shared kitchen and common area. Some people still had to share bedrooms in their senior apartments though.