We are still in the thick of summer, but educators may already be trying to schedule events for the coming academic year.
With that in mind, I would call to your attention Author and Illustrator Source, an extensive listing of (you guessed it) published authors and illustrators who make school visits and presentations, with contact information, rates and types of presentations offered. Presenters are listed both alphabetically and geographically, with biographical paragraphs and information on their titles. Areas represented include picture books, chapter books, non-fiction, poetry and virtually every type of children's and young adult literature you can imagine.
My page, which you can find here, lists my rates and possible presentation formats. I am in the unusual position of being able to offer programs for both children and adults, and I hope to do so at book festivals as well as school visits in the months ahead.