Our teachers are the one that always demonized the principal in our school. "If you don't listen what I'm telling you.. you're going straight to the principal's office"
It is often the teachers who make the principal seem unapproachable and unfriendly.. at least it was the way I learned it growing up.
Which is a shame. I'm glad you showed students that if they did good (or bad), there was two sides to the principal's office, and it was not always negative.