Need the reading level of a book?

This was posted on TWTM board.

The Lexile Framework for Reading

Grade 3 500-700
Grade 4 650-850
Grade 5 750-950
Grade 6 850-1050
Grade 7 950-1075
Grade 8 1000-1100
Grade 9 1050-1150
Grade 10 1100-1200