I have a hard time remembering all of those classes I took and especially what in the world I learned in them. Part of it is probably because of the volume of it all. Just from sixth to 12th grades, seven classes a day x 180 days x seven years = 8,820 class periods.
Part of it, though, I believe, was how I was taught. My high school career consisted of a LOT of lecture, a LOT of worksheets, and a LOT of quiet busywork.
A LOT of “safe teaching.”
It’s very easy to fall into safe teaching, especially since the students respond well because that’s the main way they are taught.