In debating, we follow some rules in order to maintain some kind of structure to the argument at hand. Otherwise, we would simply shout at each other for half an hour and then sit down!

We use the British Parliamentary system, which involves four people on either side, each giving a five minute speech on their side of the argument. The first and last minute of the five minute speech is protected time - when no "points of information" may be made.

1. The first speaker for the proposition motion opens the debate.

2. The first speaker for the opposition then rebuts what the first speaker said, and proposes the alternative motion.

3. The second speaker for the proposition then rebuts the first speaker for the opposition, and expands on the points made by the first proposition.

4. The second speaker for the opposition then rebuts the second proposition, and expands on the points of the first opposition speaker.

5. The third speaker for the proposition makes a short rebuttal, and then extends the argument with a new idea.

6. The third speaker for the opposition rebuts this extension, and may make an extension following.

7. The fourth proposition speaker can make a rebuttal of the new extension, but must focus on summing up the case for the proposition.

8. Finally, the fourth opposition speaker must sum up the whole debate - analysing the key points from both parties. However, this will be with a slant towards the opposition's side of the argument.

Points of Information (POIs) can be made by any debater on the opposite side from the person speaking, They can be made at any time except the first and the last minute of each speech, which are protected. POIs should be about 10 - 15 seconds in length, and should be a brief point of argument against what the speaker is saying. To make a POI, a debater stands up and says 'Point of Information' or 'On that point' or somehing similar. The speaker must accept or refuse the point immediately. Each speaker should accept between 1 and 2 POIs in each speech.

A judge or a panel of judges will then request all eight debaters to exit the room, and this judge or panel as necessary will come to a decision on which team places 1st, 2nd, 3rd and 4th. The judge should explain the decision made along with a positive critique of each team or each speaker as necessary.

An extended explanation can be found here.