So, as a probably bad example, here's the first one:
Student Body:
With St. George's Day coming up, I would like to remind all of you that no one should take it as an opportunity to poke, prod, or otherwise harass Miss Sloan or Mister Hino with any sort of implement. You are responsible for any damages that result as a consequence of disregarding this directive.
Thank you,
Headmistress Samantha McManus