Hi there, I'm a newbie so forgive me if I'm doing things wrong! 
I have come across the company Dekko Comics, who create educational comics for children with learning difficulties. Here's a wee video on what they do: www.youtube.com/watch?reload=9&v=0vt2yeTox_s
I personally think these comics would make a world of difference in schools and would be a valuable resource. I myself have found myself learning from them (at the age of 38!).
Just thought I'd spread the word in case any of you/your children would benefit from them.