Value-Added As A Screening Device: Part II
Our guest author today is Douglas N. Harris, associate professor of economics and University Endowed Chair in Public Education at Tulane University in New Orleans. His latest book, Value-Added Measures in Education, provides an accessible review of the technical and practical issues surrounding these models.
This past November, I wrote a post for this blog about shifting course in the teacher evaluation movement and using value-added as a “screening device.” This means that the measures would be used: (1) to help identify teachers who might be struggling and for whom additional classroom observations (and perhaps other information) should be gathered; and (2) to identify classroom observers who might not be doing an effective job.
Screening takes advantage of the low cost of value-added and the fact that the estimates are more accurate in
This past November, I wrote a post for this blog about shifting course in the teacher evaluation movement and using value-added as a “screening device.” This means that the measures would be used: (1) to help identify teachers who might be struggling and for whom additional classroom observations (and perhaps other information) should be gathered; and (2) to identify classroom observers who might not be doing an effective job.
Screening takes advantage of the low cost of value-added and the fact that the estimates are more accurate in