Collocations for expulsion - noun

automatic | immediate | mass | forced

lead to, result in
Copying from another candidate results in automatic expulsion.

call for, demand | order
The government ordered the immediate expulsion of the two men.

be threatened with, face
Several pupils now face expulsion.

appeal against
an ex-party member who intends to appeal against his expulsion

~ from
her expulsion from the society

ground(s) for expulsion
His disruptive behaviour was felt to be sufficient grounds for his expulsion.