Kyoukai Senjou no Horizon-Volume 2, School Rules

Article 10 f𝓇𝘦𝒆𝘄𝑒𝗯𝑛𝗼ѵ𝙚l.𝒄𝘰𝓶

- A confrontation or representative battle in a student dispute shall be carried out between those with the right to battle.

Article 10 Addendum

- One who has the right to battle cannot refuse a confrontation from a superior, an equal, or an inferior who has the proper rights.

Article 11

- During a student dispute, active damage to normal citizens or public and private property is forbidden.