University of Southern California
The Www Virtual Library:science Fairs
How much information do you want? What kind of fair are you organizing? Here's links to 14 national, 21 state, 121 regional and 74 local science fairs, each with their judging criteria, organization, and committees. Everyone does it...
Other
Science Fair Primer: Science Fair Rules
A good set of rules for science fairs. This set of rules is from Falmouth High School in Falmouth Massachusetts.