A student carrying a weapon is immediately expelled, and two instances of fighting usually means expulsion.
The book starts out with 15-year old Tack just trying to survive a ruthless high school where any infraction means expulsion.
For medical students, dismissal would mean expulsion from school.
For interns and residents, it would mean expulsion from a hospital training program.
They also may mean discipline or expulsion or even legal process against one.
Two consecutive fails could mean expulsion from the course.
Failure at any rank for more than three tests meant expulsion from the order.
Despite the counterculture language, possession of drugs or alcohol means automatic expulsion from camp.
Conviction on any charge also meant automatic expulsion from the Assembly under state law.
In biddy ball, being too tall can mean expulsion.