My just turned five year old is reading like crazy--I have no idea what reading level, just everything and anything he can get his hands on. He's read a few chapter book series (Catwings, Magic Tree House, etc) but I'm concerned about finding books that are stimulating for him academically but yet not too much for him in other ways. I don't know that I want him reading books about children 3 or 4 years older than him. I'd like to preserve the innocence of his childhood as long as possible without exposing him to too many story lines about evil, tragedy, etc.
How did you/do you strike the balance between reading material that is age appropriate but also on an appropriate reading level? I'm sure it gets harder as your child's reading ability increases.