Here is an ELA driven unit for Harry Potter and the Sorcerer's Stone. In this unit you will find not only comprehension questions but integrated math, graphing, and a ton of vocabulary.
I have personally used this in my own classroom and have thoroughly enjoyed it!
The amazing Clipart and Background courtesy of Alefclipart: http://www.teacherspayteachers.com/Store/Alefclipart
Harry Potter and the Goblet of Fire Comprehension Packet and Activities: