A person taking a job in teaching benefits society as a whole but disadvantages them individually. We should transfer some of that benefit to them to make it an attractive option by increasing taxes and salary.

Or, you know, you could send them some of your own money before you volunteer other people's.

What did he say that made you think he was volunteering other people's money rather than his own...? He would presumably also be paying the increased taxes he recommended. Also, why such an abrasive/defensive response when he simply recommended paying teachers a more attractive salary?

I think it's the other way around. People who gravitate towards these jobs are willing to put up with more, which while a useful skill in some contexts means that the entire profession has reduced bargaining power.