I'm a teacher as well but the "policing" of teachers is getting ridiculous. From my personal computer, I do whatever the hell I want and it's no one's business what I send and to whom. My teaching partner & I communicate frequently using our personal emails & computers instead of our work emails.
At my old school, we were told that our work computers are monitored frequently. I was then told that I shouldn't be scouring ebay while at work.
This was stupid because no one bothered to notice that I was on vacation during this incident so whomever was using my classroom used my classroom computers for ebay shopping but I got the blame.