Another random idea inspired by real life.
Assuming there isn't (see picture)... wouldn't it be nice if there was a version of wikipedia aimed at kids under 12.
Same as wikipedia (and linking to it), but less verbose, simplified language, and guaranteed free of adult material?
Heck that would be a great resource for junior schools, teachers and parents alike.
Possible Names - "WikiJunior", "Junior Wikipedia", "PaedoPedia" (ok... one of the 1st 2)