So you wanna be a freshmen. Well goodluck but here are some tips to help you out.
What I would do is know your way around the schools first. Find all academy offices etc...
Do all your homework! Probably 60% of your grade is purely homework in a lot of classes.
Next step is don't be a d**k. No one will like you and you will have zero friends.
Be friends with upper classmen! You will get rides from sports and its just more friends to be made. I know eighth graders like to drive illegally but if you get caught it sucks trust me. Just get rides from older people.