Moody's Mega Math Challenge
High school juniors and seniors throughout the New York City metropolitan area are invited to participate in an applied mathematics competition usually held in March.
International Mathematics Olympiad
Open to all high school students. Information about registrations, content, location and samples of questions.
Students Mathematics League - College Level
A contest given three times per year to community college mathematics students. Over 150 colleges are participating from the US, Canada and Bermuda. Registration information included.