Beverly Cleary Ramona the Pest
I have never read any Ramona books before, and was surprised when she was only a kindergartner. However, even so, the confusions of a kindergartner, and thoughts prove quite interesting. In the end, Ramona backs herself into a corner and it is hard to tell how Ramona is going to get herself out. Sometimes our thoughts can get the better of us, and thinking your teacher does not like you is a big thing.
I always thought Cleary was a contemporary author, but these books were written in the 50s. Who would have thunk.