http://www.mathleague.com/reglist/REGCN.HTM#British Columbia
http://www.mathcontestsonline.com/
The Math League has Math Contests for Grades 4 through 8, Algebra 1 students, and High School Students. Over one million students from the United States and Canada participate in Math League Contests each year. Every contest has questions from different areas of mathematics. The goal is to encourage student interest and confidence in mathematics through solving worthwhile problems. Many students first develop an interest in mathematics through problem-solving activities such as these contests. Schools compete in statewide or multistate league competitions.
Math League's High School Contests are the best in high school mathematics competition. Students in each league compete for the highest scores, while schools compete for the highest team score: the total of the top 5 scores in each school. These contests consist of 6 High School Contests each year, with 6 questions per contest. There are 6 score reports per year for each league, showing each participating school's team scores, high scoring schools and students, and students with a perfect score. Each score report is accompanied by a newsletter, which includes comments and alternate solutions from teachers and students. All high school students in accredited schools are welcome to compete. Problems draw from a wide range of high school topics: geometry, algebra, trigonometry, logarithms, series, sequences, exponents, roots, integers, real numbers, combinations, probability, coordinate geometry, and more. No knowledge of calculus is required to solve any of these problems. Detailed solution sheets demonstrate the methods used to solve each problem, including various approaches where appropriate. Working through these problems and our contest problem books is excellent practice for the SAT and college-bound students.
Contest Format: There are 6 High School Contests each year, with 6 questions per contest. There is a 30 minute time limit for each contest. On each contest, the last two questions are generally more difficult than the first four. The final question on each contest is intended to challenge the very best mathematics students. The problems require no knowledge beyond secondary school mathematics. No knowledge of calculus is required to solve any of these problems. Two to four of the questions on each contest only require a knowledge of elementary algebra. Starting with the 1992-93 school year, students have been permitted to use any calculator on any of our contests.