I truly enjoyed reading this book when I was younger and even now. I love how it relates to never giving up and always trying until you succeed. I remember having my parents read this book to me and getting so excited to see the little train trying his best and it motivated me to do the same! I would use this book in a first or 2nd grade classroom. The Lexile level is 680L. I could do a read-aloud and have children create their own "I think I can" trains to hang-up in the classroom. The teacher could ask students to think of what they are struggling in and write that on their trains. This would be great to reinforce confidence in students learning abilities!