Re: teacher accountability. I agree that I can hold the college professor accountable if they don't know their subject, but only if that is the case.
The major point I've been making here is that test scores, including failure rates on the incredibly easy Praxis I, are strong evidence that many teachers don't know much about what they're teaching.
Re: bashing... I do consider it bashing, and not honest criticism, when I read diatribe after diatribe about how teachers are greedy-lazy-stupid-selfish etc.
I googled the term "greedy teachers" and one of the top hits was a piece called
Teachers: A Greedy and Selfish Lot, says the Wall Street Journal. The "greedy" spin was added by the blog writer and it distorted what the paper wrote. A lot of the first 30 hits had exactly that same type of spin. Actual accusations of greed were thrown at the unions, but I didn't find any aimed at teachers.