I remember my first day of high school, it can be a little scary but trust me every other person in your grade will feel the same. It seems like high school is going to be a pain in the but actually you will probably like it better than middle school because you get more freedom and you can be friends with upperclassmen lol. For me I didn't have any bullys because everyone there was mature and people there helped me find my classes and hopefully your high school will have mature students. Just focus on your classes and study hard but don't isolate yourself from your friends or else you won't have friends. Just be confident and trust yourself because your going to miss your high school years as you get older.