I'm not a teacher, but I can tell you I'd be a very enthusiastic student!!!
I had a recent experience where I had to frog my work, and watching Amy's videos helped tremendously, but I still ended up with 3 or 4 stitches that I jumped a row on (it was on a baby blanket, so it was a LONG row!!! LOL!). I was able to cover it up pretty much, but I can't tell you how much I would have appreciated a hands on class showing me what to do.
What's bad for me is that my LYS is only open during the hours I'm working - thus, I end up getting a lot of yarn either online or at Wally World. I would love it if they'd give an evening class, though. I learned knitting from them years ago when they gave an evening class, but they never even touched on correcting mistakes.
Even if you don't do just a "mistake correcting" class, my advice would be to at least spend one or two class sessions on it.