My first year of music school was a huge turning point in my life--that was the point when I became a full-time musician. Prior to that, I had only treated music as an extra-curricular activity and never really thought I'd make a career out of it. Suddenly, my life was inundated with concerts, rehearsals, gigs, and so many music classes that I felt like I walked into a music version of Hogwarts.
Music school is fun, but... it really is like Hogwarts. There's a whole system there that only works within the confines of the school, and the outside world is quite different. So enjoy music school while it lasts. You will treasure those memories in the future. :)