Naughty Or Nice?
Naughty or nice? It is not that easy when it comes to evaluating teachers.
Early this year, the Philippines' Department of Education (DepEd) through Order No. 12 s. 2013 established a performance-based bonus system for public school teachers. This system is based primarily on students' test scores in the National Achievement Exam, the school's dropout rates, and proper liquidation of maintenance and other operating expenses. Perhaps unknown to DepEd officials, evaluating a teacher's performance using students' test scores is very much prone to error. Here are the reasons why such evaluation system is flawed.
Weeks later after the DepEd issued the order, a lecture was given by distinguished psychometrician Edward H. Haertel of Stanford University. DepEd should have listened to this lecture. The lecture can be nicely summarized in the following figures (All of these are copied from RELIABILITY AND VALIDITY OF INFERENCES ABOUT TEACHERS BASED ON STUDENT TEST SCORES):
This is what research is clearly saying. Yet, DepEd continues to ignore what teachers' groups like the Alliance of Concerned Teachers have been saying: