Here is what I would ask (and this really is to help, not to argue with you).
Are any marks and feedback late already?
(because I promise you, some students will not be affected at all).
How long is the gap between their last assessment submission and results publication date?
(because it will be clear within a week or two what scale of problem most universities are dealing with and how quickly they can deal with it)
And for the university - ask someone at level of dean or through SU:
What assessment or quality assurance processes are being implemented in response to the boycott? What plans are in place if the answer is "none".
The answers may be "not yet", "a few weeks", "working on it". I would find that okay for now.
What subjects are they studying, if you don't mind my asking? That makes a bit of a difference too.