Why stop there? Why not require everyone to sign in and out of each classroom, common room, reading room, dormitory and bathroom in the castle?

Is this really the kind of instruction in independence, responsibility and self-control that Hogwarts tries to inculcate in its students?

And what, exactly, is the purpose behind telling your staff to adhere to similar strictures on their time? Surely you don't mean to signal that you don't trust them. After all, haven't you spent several months culling and cultivating them in equal measure?

You're relying heavily on their commitment to the students, Madam. Perhaps far too heavily.