Junior pnm very curious

Ok so I am a junior in high school starting to get serious about college choices. Im from the south and sororities are very different down here. Namely saying they are a few HUGE chapters. No one lives in until sophomore year if they are lucky. There are always more girls wanting to live in than spaces. And these rooms are 4 girls maximum. This cold dorm/sleeping porch is a brand new idea. So freshmen live in house freshman- junior here? What is that like?