The National Commission on Teaching and America's Future released
The Cost of Teacher Turnover in Five School Districts: A Pilot Study. I encourage you to read the full report for yourself, especially as the newspaper accounts tend to focus on the researchers' recommendations rather than their research (the
Washington Post story even repeats the fifty percent in five years figure, erroneously crediting it to NEA).
The authors examined five school districts: Chicago, Milwaukee, Granville County (NC), and two small districts in New Mexico - Jemez Valley and Santa Rosa. These districts have a number of unusual characteristics, but let's stick to one BIG one.
The NCTAF researchers analyzed 59 variables that may affect teacher turnover, including age, race/ethnicity, experience, grade level, salary, enrollment, student poverty, and student academic performance.
How strange, then, that the report doesn't mention one critical factor in teacher turnover that is very rare, but exists in both Chicago and Milwaukee - a residency requirement for teachers. In order to teach in Chicago's and Milwaukee's public schools, you must live within city limits.
I have no idea whether a teacher residency requirement affects turnover positively or negatively, but it must affect it somehow. Decisions about staying or leaving a job in Chicago's public schools may in fact be decisions about whether to live in the city of Chicago. Just hypothetically, teacher turnover in Chicago and Milwaukee could be reduced significantly by allowing teachers to commute from the suburbs.
I suppose it's hopeless to fight the tide on this one. I've got one organization accusing me of
conspiracy-mongering on teacher turnover. But if it's such a problem, it must be measurable. And if it's measurable, it should be measured accurately and in context.