Uhm... First of all, congratulations =)
I'm in a private college so, it's not that different that the private high school I was in.
My point of view is that college is so much better than high school ! I met wonderful new friends, it's hard to see
my high school friends because we don't have the same timetable (schedule) but we always succeed to see each other
once in a month so it's cool =) (and we're texting a lot xD)
College is relaxed, even if the work we have to do is harder than in high school. Personally, I didn't chose my
subjects. I chose Modern Letters with minor Letter and that's all. I must go in all courses or I will meet the
principal... Hopefully, it's not as strict as it seems xD
So, just have fun as much as you can, because college can be fun, even if it is fun while studying ! Do your best to
don't get lost in the buildings, at the beginning, you really need to be early ! XD
Some teachers can be, as always, mean. But consider that you're an adult now so it's important to act like
one. A young adult, indeed, but the difference between the student and the teacher isn't as obvious than in high
school. You can talk more freely with them but not too much. Just forget the word "shy", it's a burden in
college... -__-'
Conclusion : College is hard, of course, but it's a wonderful human experiment. Don't be afraid ;)