The Bluford High Passport is an incentive that can be used in conjunction with the Bluford High Book Series and Teacher's Guide (or you can formulate your own questions about each book). Both of these resources are available through Townsend Press.
It's a great resource for teachers or librarians to use to encourage the reading of high-interest, low-level books to middle school or high school students.
It's up to you whether student receive any other prizes than the satisfaction of completing the passport (which includes the first 20 books). Simply print (double-sided), cut, staple, and it's ready to go!