A few years ago I authored a book on Internet sites for K-8 students and teachers, It had more than 2000 listings broken down by grade, course, etc. I am currently completing the sequel, which will have more than 6000 sites and I am going to push hard to find a partner to turn my data into an application.
Anyway I am not trying to sell you anything. Tell me what kind of sheets you need and what is the child's special need because I have scores of special needs sites which will be in the book. Take Care