在州赛赛场注册前可以换，但要学生自愿

在州赛赛场注册前可以换，但需要被换下的学生是自愿放弃。换上的学生可以是没参加Chapter 的学生，更不需要是State Qualifier。另外各州还可能有附加规则。

绝大多数情况，换人是出现在学生生病或因故缺席的时候。

"Coaches cannot substitute team members for the State Competition unless a student voluntarily releases his/her position on the school team. Additional requirements and documentation for substitutions (such as requiring parental release or requiring the substitution request be submitted in writing) are at the discretion of the State Coordinator. A student being added to a team need not be a student who was registered for the Chapter Competition as an individual. Coaches cannot make substitutions for students progressing to the State Competition as individuals. At all levels of competition, student substitutions are not permitted after on-site competition registration has been completed. "