Similar story of my own: Had a middle school computer teacher who told us to use "File -> Open URL" on Internet Explorer/Netscape (can't remember which) which opened a prompt window with a text field to enter in a URL. And I pointed out that you can just use the address bar and do the same thing and she angrily told me that I had to do it the proper way. While I thought she wasn't looking, I used the address bar anyway. She apparently had been trying to spy if I disobeyed, caught me, and told me that I failed the assignment (I did not even know I was being graded).

Another different computer teacher at my high school I had seemed to more or less admit she had no idea what she was doing (she originally taught a different subject, she seemed legitimately nervous/insecure about possibly losing her job) though she tried by just reading the text book to us verbatim for a few days. Eventually, she gave up and the students just taught each other computer stuff in her class, then when they ran out of things to teach each other they just played Age of Empires all class and the she let us.