I taught at a Woodcraft for a number of years. My observations; You need eyes in the back of your head. You can actually put your hand on the chisel to direct the cut, then turn around and the student will be back to their old bad habit. Women take instruction much better than men. Nobody likes practicing and expects to take home a finished project. A sharpening class should be held before the turning class, no one will bring sharp tools. Give them wet wood to practice on. My favorite anecdotal story; A gentleman was having a horrible time with a spindle gouge. All he kept saying was that he would be doing much better with a skew. I couldn't imagine how. He told me he had his skew in the truck, so I told him to go get it. He laid the skew flat on the tool rest and started using it like a scraper. Ah, that is why he had better luck with a skew, he was only used as a scraper! Another tip, after doing classes for a year, my promotion was getting employee pricing.