'Value-added' teacher evaluations: L.A. Unified tackles a tough formula
By Teresa Watanabe/Los Angeles Times
In Houston, school district officials introduced a test score-based evaluation system to determine teacher bonuses, then — in the face of massive protests — jettisoned the formula after one year to devise a better one. In New York, teachers union officials are fighting the public release of ratings for more than 12,000 teachers, arguing that the estimates can be drastically wrong. Despite such controversies, Los Angeles school district leaders are poised to plunge ahead with their own confidential "value-added" ratings this spring, saying the approach is far more objective and accurate than any other evaluation tool available. (more...)