Should I tell my crush I like her?

So last year there was this girl in my class, at first we barely knew each other or ever talked to each other but then it evolved into a really strong bonding, she would always compliment me and lay her head on my shoulder and ect. I had a really big crush on her but never told her, it was pretty obvious though, anyways I'm going back to school on August 13th and was wondering if I should tell her how I feel?