As mean as this is, and as unprofessional-like for a teacher, I just have to get this off my chest...
Can SOMEONE shove Snape into a tub of hot water and WASH THAT HAIR!?
*Breaths, sighs, etc.*
I vote you do it, Membrane. I'll help.
And I expect all you duelers to be able to perform the Expelliarmus to a point where you'll have a person against a wall, not just a wand from hand by next lesson.
Hope to see everyone in Charms class!