To me, that shows more than a little moral bankruptness...it certainly is not limited to teaching/schools and educators...
It just seems to me that if one is a employee being paid by the public dollar, he/she should live in the locale that employs them and use the services (as much as possible) that the locality provides.
Over time, if this arrangement is undesirable or not sufficient, a person can move to a more accommodating position.
I feel this way about a variety of city, county and state employees...LEO, civic and city employees..fire fighters, first responders...Loyalty is a two-way Street.