States Need Teachers to Know How to Evaluate Teachers
Wednesday, February 22nd, 2012If becoming a teacher involves years of education and specialized training, and if even that isn’t enough for many people to trust that the educated and licensed teacher actually can teach, then we should be worried when states try to roll out their own methods for evaluating teachers. Given that a big part of instruction is evaluation of student learning, politicians who think they can devise ways to evaluate teachers fairly and accurately should be held to the same standards as teachers: if their performance falls below acceptable levels, then they should be summarily fired. States need teachers to know how to evaluate teachers; only someone with extensive education and experience in testing and evaluation can put together an effective system.
But, as this New York Times article reports, politicians aren’t stopping to take logic into consideration when putting together evaluations. Schools around the country are dealing with problems in the evaluation systems that their states have produced. The article notes an anecdote from a school district in Tennessee, in which each teacher’s lesson is evaluated on 12 dimensions, including one that measures how well the teacher broke students into groups. Should every lesson include a groups-based component? Of course not, and thus a teacher is either forced to produce a lower quality lesson in order to do well on this item or take a low score on this item and hope to do well on all other dimensions.
States aren’t the only ones implementing poorly constructed rubrics for teacher evaluation. Administrators are just as bad. Says Troy Kilzer, principal of a high school in Tennessee, “[You] know when a good lesson is being taught without looking at a rubric.” Whether Mr. Kilzer is referring to some kind of “instinct” for figuring out which teachers are good or whether he means that a good lesson is apparent to all with no rubric needed, these kinds of statements do nothing to instill confidence in the evaluation process. If a good lesson is so readily apparent, then a rubric can easily be developed. And if Mr. Kilzer wishes to use instinct to evaluate teachers, then teachers under his supervision should be very worried. It’s easy to imagine a personal difference turning into a biased gut reaction to the teacher’s ability in the classroom.
Even teachers who support the system seem to be hurt by it. The Times reports on one such supporter: “in Chester County [Tennessee], a gym teacher recently spread playing cards around and had students run to find three that added to 14.” This sounds like an innovative way to work math into physical education curriculum, but we should evaluate this performance not against criteria for broader learning, but rather against the standards for physical education. Does running around help promote lifelong physical fitness? No. Does finding cards encourage a healthy relationship with exercise? Again, no. Does the activity help kids get better at math? Absolutely not. This integration of multiple curricula into one lesson produces worse outcomes on all reasonable measures. Yet this teacher is driven to think “outside the box” because of nebulous and poorly implemented standards of evaluation.
Some, like Daniel Weisberg, executive vice president at The New Teacher Project, a nonprofit agency, argue, “[you] have to start the process somewhere.” And such sentiment is reasonable. New teacher evaluations may not be perfect the first time around. But Mr. Weisberg’s reasoning behind starting somewhere (even with bad results) is quite poor: “If you don’t solve the problem of teacher quality, you will continue to have an achievement gap.” Once again, we see someone convinced that all problems in America’s public education begin and end with teacher quality. And thus, new evaluations, even if they cut like a cleaver rather than a scalpel, will do more good than harm. Mr. Weisberg has lots of experience working with schools, but his background is in political science and law not in education or testing. And thus he is not in a position to suggest that starting with something of poor quality is better than waiting until a better metric can be developed.
States must realize that the science of testing and evaluation is a complicated one, with a rich theoretical foundation and thousands of scholars working in the field. Not depending on this firm basis for producing teacher evaluations hurts everyone. It hurts the teachers who do not receive valuable feedback. It hurts schools by not allowing them a useful tool for meaningful evaluation. And it hurts kids, whose teachers are put on edge by inaccurate and ineffective measurement devices. We wouldn’t subject our children to tests that do nothing to measure their learning; we shouldn’t force our teachers to endure it either.