Haozhe321

@damithc this would change the following method https://github.com/TEAMMATES/teammates/blob/30a7659784b62567836476375f26187492550c0c/src/main/java/teammates/logic/core/StudentsLogic.java#L423-L449 In that case, what would constitute an invalid team info?

Should a new variable be added in TeamDetailsBundle class, i.e. the sectional this team belongs to? One consideration of this is backwards compatibility with students created before this change takes...