What is the best 300+ memoir you have ever read?

I am going to write a book report for my class but, I am confused as to which book I should choose. I was thinking “Chalked Up” by Jennifer Sey because I love gymnastics and I think it would be an interesting read. However I am open to a lot of different genres and topics, so whatever you suggest is fine with me. Just as long as its appropiate for high school though. :)

P.S. I would really like to use a memoir though. As I have only read a few and I am looking to expand my reading base. So memoirs would be greatly appreciated. Thanks.