I’ve seen Wormeli speak, and on the whole I think he is a good gut. He is trying to point us in the right direction. Interesting video.
A lot of my colleagues flip out at the ‘giving zeroes’ issue. It was never that big a deal to me- I thought Wormeli had a point, and I changed practice accordingly. Some people feel that ‘just a zero’ isn’t bad enough. That is not really what I am interested in, so it wasn’t an issue for me.
Early in my career I had a parent question giving a 0/100 for an assignment, but I hadn’t really thought it through in this way, so I have to say, I was unresponsive (I also have to say, that the parent, who was a Professor of Education, didn’t really make the point that Wormeli is making, which is perhaps a story for another time). Part of my frustration with grades is that it continually sidelines us into conversations that are not about learning, which drives me nuts.