They need to run with this: Expel *all* students involved in such incidents.
That is, the accused rapist and their victim.
The justification used is one of “equality”, that women should be treated no differently than men. To do otherwise is “sexist”.
It uses similar logic to what they are proposing.
Hey that’s the Moose approach.
This does have a certain logic. When there is a fight at school, both children are punished, because the child who defends himself is engaging in as much violence as the one who started raining down the blows.