Not Fair and Not My Idea

Friday is a free day We are off work. Last year on the first week My principal volun-told me for an extra duty and I had an all-day workshop on this Friday So while everyone else had the whole day off I was held captive from 8:30 to 3:30 I received a summons on Friday I was invited to a MANDATORY refresher course all day this Friday. I sent back a sweet note saying if they wanted to appoint another person to this duty I would gladly back out, but I am unavailable on Friday. I did not think it was fair, when it was not even my idea. Weirdly enough I almost immediately received a missive saying it was no problem Since I had already been trained, I could skip this training.