Questions Unlimited is America's premier supplier of questions and answers for academic competition. We also sponsor the National Academic Championship and the QuizNet on-line competition for high school students.

DemiDec Resources is an organization directed by Academic Decathlon national champion Daniel Berdichevsky and staffed by present and former Decathletes from across the country. For almost six years now we have worked together to produce comprehensive resource materials for Decathletes and coaches.

WordMastersChallenge.com - The WordMasters Challenges are competitions for students in grades 3-12 which address high-level reading and reasoning skills.