The Los Angeles Times (!) has an outstanding article by reporter Teresa Watanabe about the new teacher evaluation system. It is based on growth in test scores and on computer modeling. The focus is on one teacher who seems to do all the right things: last year, he got a good rating but not this year. What changed? Nothing.

The United Teachers of Los Angeles has been fighting the LAUSD’s efforts to impose this flawed system on all teachers.

Eventually, after we have spent billions of dollars on these mechanical systems, the policymakers will figure out that the experts were right: the ratings reflect who is taught, not teacher quality.

Remember: no other nation in the world is judging teacher quality this way. This is our own nutty idea. It’s main accomplishment: demoralization of teachers.