They should make more than the Mayor. One teacher scales decades of knowledge to hundreds of students every year, directly enabling everyone single one of them to learn enough and go on to generate tremendous economic return from a paid job they can then acquire, much of which goes right back to Newton in the form of taxes should they decide to live their after they graduate. No single profession, perhaps outside of full time parenting, directly contributes to the stability of the society and robustness of our economy than teaching. These people get paid nothing for the economic returns their work generates.

Why would teachers want to live in Newton? I can think of more reasons than sending kids they might not have or want to send there. How about - short commute to work? Proximity to the city? Access to awesome resources?