With teacher evaluation a nationwide concern these days, the race is on to determine the best way to track music educators' progress. For politicians and for the public, it boils down to this: Get the lousy teachers out so the kids can score well on standardized tests. An oversimplification, perhaps, but it goes a long way toward explaining why teachers of music and the other arts end up getting evaluated on student science scores or dropout rate or attendance. The truth is that right now, there is no other way to evaluate them. There are three types of teacher evaluations currently in practice, and they are easily distinguished in general terms: evaluations based solely on student achievement, evaluations based solely on teacher observation, and evaluations that use multiple measures, including the aforementioned as well as content knowledge, parent input, and others.