Outsider’s wild teacher-evaluation idea

Jay Matthews:

Luke Chung, president and founder of a software development company in Tysons Corner, volunteered many times to help the Fairfax County school system with computer and business issues. He was a nice guy, so when the county needed to fill two slots reserved for outsiders (what educators often call non-educators) on the Teacher Performance Evaluation Task Force, he was appointed.
He might have seemed to some a genial innocent who would not get in the way of the teachers, principals and administrators who were the majority. But Chung was an experienced manager motivated to nudge the task force in new directions. He revealed in his company blog his astonished reaction to the key issue:
“As an outsider who has never been evaluated as a teacher, you can imagine my surprise to discover that although principals were judged by their school’s student performance, student performance is not part of a teacher’s performance evaluation in our county,” he wrote. “Are you kidding me?” Chung’s italics, not mine.
He got the basics. “Not all students are equal, and we don’t want to have a system where teachers are evaluated solely on student performance because the incentive would be to only want to teach good students,” he wrote. He saw some sense in value-added measurements, rating teachers on how much their students improved. But there were practical problems, he said, “such as kids moving in and out of classes within the year, impacts on kids outside teacher control, whether the test is a good measurement, multiple teacher collaborative environments, etc.”