It takes all kinds of kinds
The earlier you learn this, the better. But here's our little secret, this is actually the case in all aspects of life; high school, adult life, etc. but it's never quite as obvious as it is in college. You will have all sorts of roommates, classmates, club-mates, teammates and mates in general. All of these individuals have the potential to not only have diverse personalities, but there's a good chance many of them will also come from different economic, socialogical and cultural backgrounds than yourself.
Is it a little overwhelming? YEP. Especially for those coming from a relatively sheltered upbringing who are attending school in a different part of the country. But is it also one of the coolest things about college? YEP. Your horizons will no doubt be broadened and you'll meet some awesome people in the meantime. You'd be surprised how many students decide to attend school outside their hometown or even their home state simply for this reason. They crave exposure to something and someone unlike the past 18 years of their life.
Another great thing about college is that not everyone you meet needs to be your best friend. You'll have so many classes, extra curriculars and social gatherings that you'll most likely have more acquaintances than anything else. Some of your greatest stories will be from someone you worked with on one class project or met once at a party.
If you spend college only with those you knew from high school or those who seem most like you, you'll regret it. They say you make your best friends in college, but that doesn't come automatically – You have to meet them first. And that involves being open to new people and new personalities. Some students who enter college believe that a diverse group of friends is just going to fall in their laps, but it's actually the contrary.
The New York Times discovered back in 2015 that colleges and universities are advertising diversity but subliminally encouraging personalized options that contradict that very fact. You are able to select housing based on you major, grade point average or allergies (fake or real). You are encouraged to join clubs based on what you're studying, and marketing for events on campus is targeted at the same group of students who would have likely attended them anyway. So the decision is ultimately yours as to whether or not you want to make the effort to do something out of the ordinary and encourage others to do the same. If someone could make it “cool” or “a thing” to branch out, maybe it would become a bit more commonplace, and a little less scary.
Enjoy the strange encounters, deal with the awkward people, and take advantage of the diverse culture college has to offer. Our nation as a whole is changing, and it's only appropriate that we reflect and embrace this in our secondary education.
Good luck and go do something weird!