I am surprised they only go to I. In our school, K goes higher. But they say P is between 3rd and 4th grade.

DD brings home books from an assortment of 3 levels since she is having a hard time liking some of the books. The teacher said she was getting more, we brought it up. I was planning to donate but it was also OK with the teacher that DD get books from the library and told her to do her non fiction reading at school, which she likes.