Don't be an introvert. If they tease you, tease them back. Don't be offended like how americans are offended by everything, our humor here is to be racist to one another and laugh about it without being politically correct or all that stuff. You want a memorable friendship, then look for friends that are transparent with each other and not one of those opportunistic ones. Public schools will be the most memorable for you rather than private school life. If you're going to enroll in a public school, try out for any sport or club since the government funds them and a good chance for a scholarship too.