What is Accelerated Reader?

Accelerated Reader is a computer programme which enables teachers manage and monitor children's independent reading practice. Children pick a book at his/her level, and reads it a his/her own pace. When finished children take a short quiz on the computer to check they have understood what has been read. This is completed in school. 

How do I know which books are on Accelerated Reader?

You can use AR Bookfind to look for books that have quizzes:

https://www.arbookfind.co.uk/