As a mod to Penfolds comments I'd word it as
- installing inappropriate software on devices owned by the school and connecting to school devices either externally and internally will mean the school taking disciplinary action against the individual.
Staff all sign the same AUP here and it covers these eventualities equally well, regardless of whether the staff member in question is a teacher, SLT member, IT person or caretaker.
Sadly the reason you write an aup is not because you don't trust them, but so they can't turn around and say "you didn't say I couldn't do that" during disciplinary action.
It's happened here, now we have 2 aup's.
1 for staff/students and 1 extra for it staff (which I also
If nothing else the AUP should state that all actions are, where possible, logged. This means that should something happen (eg and accusation against a member of the support team) then at least you have logs to show what you and your staff were doing. You may decide to be unfiltered, etc ... but there should be some guidelines of what is responsible actions ... but trust is key in this.