The Confusion of School

I used to be 11, but now I am 12,
I used to be in elementary, but now I am in middle school,
I used to hate school, but now I like it,
I used to dislike music, but now I love it,
I used to be unsocial, but now I have plenty of friends,
I used to not like exercise, but now I’m ok with it,
I used to be confused, but now I’m confident.