World School's Debate

World School's Debating is the high school style done in the most countries. The biggest difference in terms of rules is that there are 3 debaters on each side rather than just 2. Typically a team can have up to 5 debaters, 3 of whom debate in any one round although the remaining 2 can help with preparation. Few tournaments in Canada or the US use the style, but many international tournaments do. The detailed rules are available at this link (the first few sections are bylaws, etc. but the actual rules are there as well -- just scoll down)