I'd like to see a rally on the state of the school with representitives of at least gryffindor, Hufflepuff and Ravenclaw. Maybe with demands like this,
Ravenclaw: The house of intelligence demands better teaching. We must in position to excel if we are willing to earn it.
Hufflepuff: The house of loyalty demands fairness. All rules must apply to all students equaly.
Gryffindor: The house of courage demands our curriculum reflect the changing world around us. Gryffindors go forward, for no mage may live in the past.
maybe with an sympathetic Sytherin
Sytherin: The house of ambition demands competition at all levels among Britian's schools. So those with high aspirations may prove their worth to the world.