Neanderthal P E Teacher

Just heard my son's PE teacher call him by his surname, 'he always does that' my son replied when I asked if that was usual. The boy doesn't mind, but I do. Brought back unpleasant memories of my own school days, when teachers seemed to regard their pupils as lower life forms. Contrary to all expectations when I left school, I am a teacher myself, but I find respect and cooperation get far better results, and make for more harmonious learning environment then the one I was educated in.
Of course, it would have to be a PE teacher that brought this on; the sweaty trainer brigade never were at the forefront of academic life.