Fucking THIS. In my high school, there was exactly one (perhaps two) English teachers that genuinely tried to get you to write like a thinking adult instead of an infant. One of them came under incredible pressure for it due to the fact that he was failing seniors. (When I had him, they'd moved him to teaching English for juniors.)
The effects of bad English classes are all around me, even in college. Memorably, I did a collaborative project at the end of the year in one class that saw me stuck as the guy putting everyone's stuff together. I literally had to re-write the work done by two of our group members; the only stuff up to snuff was the GRADUATING SENIOR'S WORK. I was up until around 3 in the morning; actually getting my group members to even GIVE me the material was problem enough!