Chicago teachers on strike
Striking Chicago teachers are unhappy about several issues. (Sitthixay Ditthavong / Associated Press / September 12, 2012)
The Times' editorial board has supported making student test scores part of a teacher's performance evaluation -- within reason. But the Chicago teachers strike shows at least one reason why teachers unions have opposed such policies so vociferously.
Part of what we ask of teachers is that they keep bringing those test scores higher; as a result, it's reasonable for their evaluations to include how well they've done that part of the job. But when the scores are closely linked to the pay raises teachers get -- or whether they even have a job -- school administrators are in untested waters, and I'm not sure they remembered to bring a life jacket with them.
Of course a teacher's evaluation should have some kind of impact, including, in the cases of the most problematic teachers, that they could lose their jobs. Some teachers should lose their jobs, and