|How much time do teachers work?|
On the Corner yesterday, I wrote about how the OECD not only uses these less reliable data, but also mixes and matches methods when comparing countries:
OECD studies are sometimes just too ambitious. The truth is that large-scale international comparisons are almost inevitably plagued by inconsistent and unreliable data. The most recent example: The OECD’s Education at a Glance 2013 shows American teachers working more hours than teachers in every OECD country except Chile (see table D4.1 in the study). Sounds impressive!Read the whole thing here. And for a discussion of other methodological challenges to assessing teacher compensation, try this longer backgrounder.
But consider how the data are collected. For many countries, the OECD appears to measure teacher work time based on statutory or contractual work hours. For the U.S., however, the OECD relies on the federal government’s School and Staffing Survey, which directly asks American teachers how much time they work.
That’s an inconsistency likely to inflate U.S. hours relative to the rest of the world.