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How It Works

The format and the math.

Jack & Jill competitions use two systems working together: a competition format that tests connection, and a scoring algorithm that ranks results without ambiguity.

The Format

Random partners. Pure connection.

In Jack & Jill, you don’t choose your partner. Leaders and follows are drawn randomly each round — so judges see how well you connect with a stranger, not how rehearsed you look with your regular partner.

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Step 1: Preliminary

Judges score leads and follows separately. Each judge is assigned to watch one role. Competitors are scored on timing, musicality, and connection — not on their partner's performance.

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Step 2: Callbacks

Top performers from each role are called back to the final. The number of callbacks is set by the organiser — typically the top 30–40% of the field. Alternates are also named, so everyone knows exactly where they stand.

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Step 3: Final

A typical digitally scored final re-pairs called-back leads and follows as couples. The organiser’s chosen scoring setup determines the published final record.

Judges are split by role in preliminary rounds— some watch only leads, others watch only follows. This means your placement is never affected by your partner’s performance in the early rounds.

What is an alternate?

When callbacks are announced, alternatesare named alongside the finalists. If a called-back competitor can’t make it to the final — due to illness, injury, or a scheduling conflict — the next highest-placed competitor from the preliminary round steps in. Alternates are announced with the callbacks so everyone knows exactly where they stand. In some competitions this is called a “scratch” (when a finalist withdraws), but alternate is the clearer term for the dancer waiting to fill that spot.

The Algorithm

Ranks, not points. Majorities, not averages.

RPSS — the Relative Placement Scoring System — is a documented placement method used in partner-dance competitions. We implement the rank-and-majority procedure described in the primary references below.

Instead of asking judges to rate competitors on a scale (7.5, 8.2, 9.0…), RPSS asks each judge to rank them: who is 1st, who is 2nd, who is 3rd. Ranks from all judges are then combined using a majority rule — so the result reflects the consensus of the judging panel, not its average.

Why relative placement, not averages?

Numerical averages have a well-known flaw: a single outlier judge can skew the whole result. If one judge scores a couple 10/10 and six judges score them 6/10, their average is 6.57 — higher than a couple six judges ranked 1st but one judge marked 5/10. The couple the panel preferred loses on paper.

Averages also reward middle-of-the-road judging: a judge who never goes low and never goes high has outsized influence relative to a judge with strong opinions who happens to be right.

Relative placement eliminates both problems. Each judge answers one question: “Compared to everyone else in front of me, where does this person rank?”— not “what score do I feel like giving them today?”

1 2 3

Judges rank, not rate

Each judge places competitors 1st through Nth. No duplicate placements allowed. No 9.5 vs 9.8 arguments — just rank order, one opinion per position.

Majority wins

A competitor “wins” a place when more than half the judges have placed them at that position or higher. With 5 judges, you need 3. If 3 judges place you 1st, you place 1st — regardless of what the other 2 think.

Σ

Tiebreak: sum of places

If two competitors both achieve majority at the same position, the one supported by more judges wins that position. Still tied? Sum all judge placements — lower total wins. This is Rule 11 in the documented procedure.

Tiebreaking in detail

Step 1 — majority count: Both competitors have majority at the same place. The one with more judges supporting that placement wins.

Step 2 — sum of placements: Majority counts are equal. Sum all judge placements for each competitor. Lower sum wins (e.g. a sum of 8 beats a sum of 11).

Step 3 — head-to-head: Sums are also equal. The system compares the two competitors head-to-head at the tied position — whoever more judges preferred at that specific place wins. A true three-way dead-heat after all three steps is extraordinarily rare.

Worked example — 5 judges, 4 couples

Highlighted cells are the placements that count toward majority for each couple’s final position. The “1–3 (majority)” column shows how many judges placed a couple 3rd or higher — once that reaches 3 (out of 5), majority is achieved.

CoupleJ1J2J3J4J51–3 (majority)SumPlace
Carlos & Elena11212571st
Remi & Sofia23121592nd
Adrian & Nina323335143rd
Stefan & Mia444440204th

Reading this table:Carlos & Elena have 3 judges placing them 1st (J1, J2, J4) — that’s a majority (3 of 5 judges), so they place 1st. Remi & Sofia have 4 judges placing them 2nd or higher, winning 2nd place. No averages were computed at any point.

Majority reached — enough judges have ranked this couple within that position to secure placement
Close call — one vote short of majority; could tip with a tiebreak
Some support — ranked by some judges but not near majority at this position
Our commitment

Clear records for published events.

Each published event page explains the result record available for that competition. Digital score detail and organiser-supplied placements are presented differently, so dancers can understand what they are viewing.

Digital score detail when published

For digitally scored rounds, the published result page can show the recorded judge placements and calculation detail. Organisers can also apply public judge-name privacy settings.

Organisers choose when results are released

A digital round can be calculated once its scoring panel has completed submissions. The organiser controls when its public result page is released.

Inspect the record available for the event

For digitally scored rounds, available majority counts, sum-of-places and tiebreak detail appear at /results. Digitally scored rounds show their recorded calculation detail; organiser-supplied placements are explicitly labelled when no digital final ballots were recorded.

Published scoring setup is explained

Each public result page distinguishes the scoring data available for that event and respects the organiser’s public judge-name settings.

Further reading

Sources & reference documents

These primary references describe the rank-and-majority procedure used by digitally scored finals. You can read the same material we reference.