Personas and modules available for any user depend on roles and tasks the user has.
All users in the system have the All School role. If a user has only the Teacher role (aside from All School), they will not see any additional modules (such as Extracurricular, Academics, etc.), and will work under a Faculty persona.
If your Teachers have additional responsibilities and roles (ex. if you have a Teacher that is also an Academic Group Manager, and Attendance Manager), they will see their Faculty persona, as well as Academics.
If your Teacher is also a parent of a current student or incoming student they will also see the Parent or Incoming Parent persona.