Political Debate: These occur on tv. The purpose is to get their ideas heard or to get more votes to win an election. It sometimes helps arrive at a better decision. The debate is structured, which allows the candidates to get the same amount of time making it unbiased.
School Debate: These occur in school. They allow people to get out their opinions and to persuade others. It's free from violence and it allows both sides to be productive. It can be either structured or unstructured. When it is structured everyone gets a chance to say what they want and if it us unstructured the teacher or one student would probably take over the debate.