A practical guide to how a World Schools debate is structured, what each speaker does, and how judges decide.
World Schools is the debating format used at the World Schools Debating Championships and at most international school competitions. Two teams of three argue a motion, each speaker talks for eight minutes, and each side finishes with a shorter reply speech. Some motions are released weeks in advance; others are released on the day — one hour before the debate at the WSDC itself, and as little as 30 minutes at many tournaments that run the format — so teams prepare them from scratch.
What World Schools is
A World Schools debate has two sides. Proposition argues for the motion and opposition argues against it. Each side fields three speakers, and the two teams alternate: proposition first, then opposition, and so on through six eight-minute speeches.
Once those six speeches are finished, each side gives a four-minute reply speech that sums up the debate from its own point of view. Opposition replies first, so proposition always has the last word.
Throughout the substantive speeches, the opposing team may stand and offer short questions or challenges called points of information. Handling them well is part of what a speaker is marked on, and it is the feature that most distinguishes World Schools from formats where speakers are never interrupted.
The format was built for international competition. At the World Schools Debating Championships each team represents a country rather than a school, and the rules are written so that no single national style of speaking, no technical jargon and no specialist background knowledge. A debate is meant to be intelligible to a reasonably well-informed adult who has no expertise in the topic.
Why learn this format
For a student who wants to compete internationally, World Schools is the format that matters. It is what teams debate in, and in Hong Kong it is the format used for Team Hong Kong selection and for most of the regional tournaments a student is likely to enter.
World Schools rewards clear reasoning and teamwork, not speed or jargon, which makes it unusually friendly to newcomers and unusually demanding at the top.
Three things make it worth learning even for students with no interest in travelling to a championship.
- It is debated in teams of three speakers. The three speakers on a side divide the case between them, cover each other and stay consistent. A student who is used to writing an essay alone has to learn to build one with two other people.
- Half the motions are unseen. Preparing a position against the clock, without the internet and without a coach, teaches a kind of quick structured thinking that prepared speaking never does.
- Listening is marked. A speaker who ignores what the other side said scores badly no matter how polished the delivery. The format forces students to represent an opposing argument accurately before answering it.
Those habits carry over into interviews, essays and class discussion, which is why students who never enter a tournament still get value from learning the format properly.
How a debate is structured
World Schools debate structure
| Element | How it works |
|---|---|
| Teams | Two, three speakers each |
| Substantive speeches | Six, eight minutes each |
| Reply speeches | Two, four minutes each |
| Who replies | The first or second speaker, never the third |
| Points of information | Offered between the first and seventh minute of a substantive speech |
| Substantive marks | 60 to 80, with 70 as an average speech |
| Reply marks | 30 to 40, with 35 as an average reply |
| Judges | An odd-numbered panel, at least three |
| Result | Decided by a majority of judges, not by total points |
| Impromptu preparation | One hour at the WSDC — often 30 minutes in adapted formats — team only, no internet |
The diagram below shows how a debate flows. Proposition opens, the sides alternate through six substantive speeches, and the replies run in reverse order so that proposition speaks last.
- First proposition8-minute substantive speech
- First opposition8-minute substantive speech
- Second proposition8-minute substantive speech
- Second opposition8-minute substantive speech
- Third proposition8-minute substantive speech
- Third opposition8-minute substantive speech
- Opposition reply4-minute reply speech
- Proposition reply4-minute reply speech
Note that the two reply speeches run in the opposite order to the rest of the debate. Opposition replies first and proposition replies last, so the side that opened the debate is also the side that closes it.
What each speaker does
The pattern across the debate is simple: the later a speaker comes, the more time they spend answering what has already been said, and the less time they spend introducing new material of their own.
| Position | Primary work | New case material | May give reply |
|---|---|---|---|
| First proposition | Define the motion, explain the team’s position, say how the case is divided, deliver the opening arguments | Yes | Yes |
| First opposition | Accept or challenge the definition, answer proposition, set out the opposition position and case division | Yes | Yes |
| Second proposition | Rebuild the case, answer first opposition, deliver the remaining assigned arguments | Yes | Yes |
| Second opposition | Rebuild, answer second proposition, deliver the remaining assigned arguments | Yes | Yes |
| Third proposition | Answer the opposition case and organise the debate into the two or three issues that decide it | No | No |
| Third opposition | The same, for the opposition side | No | No |
| Reply speaker | Sum up the whole debate from the team’s point of view, comparing the decisive issues | No | — |
Third speakers and clashes
A third speaker is mainly there to respond. They may carry a small piece of the team’s own case, but only if the first speaker announced it when dividing the case at the start. Saving the strongest argument for the third speech is a poor idea in any event: judges read it as bad prioritisation by the team, and it costs marks.
The best third speeches are not organised as a list of replies working through the opposing speeches in order. They are organised around clashes.
A clash is a single question the two teams genuinely disagree about, where both sides have argued and the judge has to decide who was more convincing.
If the motion is about banning private cars in city centres, one clash might be whether the ban actually reduces pollution, and another might be whether it is fair to people who cannot afford to live near their work. Each is a question both teams have taken a position on. Most debates come down to two or three of them.
A third speaker’s job is to resolve those clashes. In practice that means four things:
- Identify the clash. Name the question in a sentence, so the judge knows what is being settled.
- Explain what each side actually said on it, including the other team’s case, fairly enough that they would recognise it.
- Resolve it. Say which side was better and why, pointing to the reasoning and evidence in the debate instead of simply repeating the team’s own argument more loudly.
- Weigh it. Explain why this clash matters more than the others, or why winning it is enough to win the debate.
Weighing is the part students skip most often, and it is where marks are won. Two teams can both be right about different things. The team that explains why its issue is the more important one is the team that wins.
Judges are trained to organise the debate into issues themselves and then decide each one. A third speech built around clashes gives the judge that structure already made, from the team’s own point of view. A speech that works through rebuttals in the order they came up leaves the judge to do it alone.
Reply speeches
A reply speech is often described as a biased adjudication: the speaker explains, as a judge would, why their side won, while being open about which side they are on.
No new arguments are allowed. New examples that illustrate an argument already made are fine, and so is new comparison and framing, which is where good replies do their work. A reply that only lists what happened is a weak reply. A reply that explains which issues actually decided the debate, and why they fell the team’s way, is a strong one.
Points of information
A point of information, or POI, is a brief question or challenge offered by a member of the opposing team while someone is speaking. The speaker chooses whether to take it. POIs test whether a speaker can defend the case under interruption without losing control of the speech.
- 0–1 minuteNo POIs may be offered
- 1–7 minutesPOIs may be offered by the opposing team
- 7–8 minutesNo POIs may be offered
No POIs are offered during reply speeches.
- A POI should last no more than about 15 seconds.
- The speaker may accept it, decline it, or ask the person offering to wait until the end of the next sentence.
- As a general rule a speaker should accept at least two POIs, provided they are offered at reasonable moments.
- Each speaker should offer two to four POIs per opposing speech, spaced out. Offering constantly is treated as barracking and counts against the team.
- Judges consider both how a speaker answers points and how well the points that speaker offers are chosen.
A speaker who is never offered a point cannot be marked down for failing to take one. The obligation runs both ways.
Defining the motion
First proposition opens by explaining what the motion means and what the debate is going to be about. The test is what an ordinary intelligent person would understand the motion to mean on reading it. That standard does a lot of work in this format, and it is the same standard judges are told to apply to themselves.
A definition has to be reasonable. It should be close to the plain meaning of the words, match how general or specific the motion is, and leave the opposition a real debate to have. Three things are not allowed:
- Squirrelling — twisting the motion so the team can run an argument it prepared in advance regardless of the topic set.
- Place-setting — narrowing a general motion to one particular country or place.
- Time-setting — narrowing a general motion to one particular moment in the past or future.
Opposition can accept the definition, or challenge it and offer an alternative, or argue that the case fails even if the definition stands. In practice, challenges are rare and usually unwise. Unless a definition makes the debate impossible, it is nearly always better to accept it and win on the substance.
If first opposition does not challenge, the definition is settled and cannot be reopened later — unless proposition itself changes it partway through, in which case opposition may respond.
A common misunderstanding. Proposition does not have to present a detailed model or plan. One is only needed when the motion calls for a solution and the details are necessary to show it would work. Running a narrow case is also perfectly legitimate: a team that chooses to defend the motion with a single strong argument cannot be criticised for it.
Prepared and impromptu debates
A championship mixes both. Some motions are released well in advance so teams can research them thoroughly. The rest are handed out on the day, and those debates are prepared in one hour at the WSDC (many adapted tournaments allow 30 minutes instead).
- Motion releasedThe clock starts as soon as it is read out (one hour at the WSDC; often 30 minutes elsewhere)
- First 15 minutesTeams may ask for clarification. Any answer is given to both teams
- Remaining timeThe three speakers build the case alone, with printed material only
- Debate beginsTeams move to the room and the round starts
The restrictions are strict and worth rehearsing before a tournament. Only the students debating that round may take part in preparation: no coaches, and no squad members sitting the round out. Teams may bring a dictionary and a single-volume encyclopaedia, but no phones, laptops or anything else that reaches the internet.
Practising under those exact conditions before a tournament is worth more than any amount of extra reading. Teams that have only ever prepared with a coach and a laptop find the first impromptu round much harder than it needs to be.
How a debate is won
Each judge on the panel decides independently which team did the better debating and fills in their own ballot. The team that wins a majority of the three judges’ ballots wins the round.
Speaker points do not, on their own, decide the round — the ballots do — but they have to agree with it. On every ballot, the team the judge awards the win must also finish with the higher total of speaker points, so a judge cannot hand a team a “low-point win”. Speaker points then carry through to break ties for knockout qualification when teams’ records are level, and to decide the individual speaker awards.
Judges are expected to decide the debate that actually happened in front of them. They are told not to use specialist knowledge of their own, not to penalise a team for an argument it never made, and not to fill in reasoning a team left out. If an argument only works when the judge already knows the background, it does not work.
How scoring works
Every substantive speech is given a total between 60 and 80, and every reply speech a total between 30 and 40. An average substantive speech scores 70 and an average reply scores 35. Judges may not go outside those ranges, so the entire competitive range of the format sits inside twenty marks.
The total is made up of three components. Content and style are worth 40% each, and strategy is worth 20%.
Substantive speech · total mark 60–80
Reply speech · total mark 30–40
| Category | Weight | Substantive | Reply | What judges are assessing |
|---|---|---|---|---|
| Content | 40% | 24–32 | 12–16 | The quality of the arguments and how well they are explained and evidenced, judged separately from delivery. |
| Style | 40% | 24–32 | 12–16 | How effectively the speaker communicates. Accent and personal speaking style are not penalised. |
| Strategy | 20% | 12–16 | 6–8 | Whether the speaker understood which issues mattered, chose the right ones, and structured and timed the speech well. |
| Total | 100% | 60–80 | 30–40 | Each judge reaches an independent decision on which team did the better debating. |
What the numbers mean in practice
Because the range is narrow, small differences matter. A speech at 70 is exactly average for the tournament. Anything in the low seventies is above average. Marks around 76 are the level at which judges would expect to see a speaker in the knockout rounds. Scores at the very top of the range are close to theoretical.
The most reliable way to move up the scale is not to find a cleverer argument. It is to explain the arguments already being made more fully and more often, and to spend the most time on the issues that actually decide the debate.
On English as a second language. Judges are asked to make allowance for different accents and speaking styles, but to hold every speaker to the same standard of communication. There is no penalty and no discount for being a second-language speaker. Clarity, pacing and word choice are marked, and all three can be coached.
Common questions
How long is a World Schools debate?
Six substantive speeches of eight minutes and two reply speeches of four minutes, so about an hour of speaking once brief pauses between speakers are included.
What is a good speaker score?
70 is an average speech. The low seventies are above average. Around 76 is the level judges associate with a speaker reaching the knockout rounds. The very top of the range is rarely awarded.
Can a third speaker introduce a new argument?
No. Third speakers do not introduce new arguments — their role is to respond, weigh and organise the debate into its decisive issues.
Can a reply speaker say anything new?
No new arguments. New examples that support an argument already made are allowed, and so is new comparison and framing. A reply that only recaps what happened is a weak reply.
How many points of information should a speaker take?
Two is the usual guidance. Taking many more risks losing control of the speech. Speakers should also offer two to four points per opposing speech, spaced out across the speech instead of bunched together.
Can a judge award the round to a team on fewer speaker points?
No. A judge first decides which team won the debate, then sets the speaker scores so they match that decision — the team they mark as the winner has to end up with the higher total of speaker points on their ballot. A “low-point win” (winning a ballot on a lower speaker total) is not allowed. The round itself is still decided by which team wins more ballots, so across all three judges a team can win the round while sitting on a lower combined speaker total — that is consistent with the rule, because what matters is that each individual ballot is internally consistent.
Does proposition have to present a model?
No. A model is only needed when the motion calls for a solution and the details are necessary to show that it would work.
Are points of information allowed in reply speeches?
No. They may only be offered during the six substantive speeches.
How much preparation time do impromptu debates get?
One hour at the WSDC, starting when the motion is read out — though many tournaments that adapt the format give 30 minutes instead. In either case only the three speakers may take part, with printed material only and no access to the internet.
Is World Schools the same as British Parliamentary?
No. British Parliamentary has four teams of two and judges confer to agree a single ranking. World Schools has two teams of three and each judge files an independent ballot, which are then counted.
Learning the format at Capstone
Understanding the format is one of the quickest ways for a student to improve, and it is often the part that gets least attention. Knowing what a third speaker is actually for, or why a reply speech is meant to compare the debate instead of summarising it, changes how a student prepares long before it changes their scores.
Capstone’s PSD II and PSD III classes run full World Schools rounds every week, and the coaching team includes adjudicators who have served on the Chief Adjudicator panels and Motions Committees of the World Schools Debating Championships. The quickest way to find out where a student stands is to have a round watched by someone who marks them for a living.
Official sources
This guide summarises the World Schools format for students and parents. It is not a substitute for the rulebook. Anyone judging or running a tournament should work from the official documents below.
- WSDC Tournament Committee and Debate Rules — the binding rules, covering both tournament administration and judging.
- WSDC Adjudicator Guide — how judges are asked to apply the marking standard.
- WSDC judge and speaker training materials — the official training decks published each year.
- English-Speaking Union, Introduction to World Schools Format — a short introduction for newcomers.
Reviewed against these sources on 25 July 2026.
Check the rules for your event. This guide explains the World Schools format as used at the World Schools Debating Championships. Other competitions may change speech lengths, preparation procedures or judging arrangements, and some enforce local conventions of their own.
