B.W.F. - Badminton World Federation (latest edition).
Ground Rules
A. The tournament will be governed by the ground rules, which are instituted by the host school.
B. Each school fields one boys’ team and one girls’ team. Players must be ranked according to ability for singles and doubles #1 and #2. Number #1 ranking being the top player / pair. Line-ups assigning players to events will be given to the Host School three weeks prior to the tournament. Positions will be finalized at the coaches meeting. After this time - no player can change position.
C. In divisional tournaments, the #1 ranked players from each school will play both the #1 and #2 from the opposing team in the round robin. In super tournaments the #1 ranked players from each school will only play the #1 from the opposing team and the #2 ranked players will only play the #2 from the opposing team in the round robin. Once a player or doubles team has been assigned a ranking, he/she cannot change ranking during the tournament.