Value added measures sound fair, but they are not. In this video Prof. Daniel Willingham describes six problems (some conceptual, some statistical) with evaluating teachers by comparing student achievement in the fall and in the spring.
spring
Value added measures sound fair, but they are not. In this video Prof. Daniel Willingham describes six problems (some conceptual, some statistical) with evaluating teachers by comparing student achievement in the fall and in the spring.
To see where public education is being driven, let’s look at a school district in North Carolina where students in every grade were used as guinea pigs this spring to help field-test a total of 52 -- yes, 52 -- new standardized tests this spring, kindergarteners included.
[readon2 url="http://www.washingtonpost.com/blogs/answer-sheet/post/school-district-field-tests-52-yes-52-new-tests-on-kids/2011/04/20/AFFbGXFE_blog.html#pagebreak"]Continue reading...[/readon2]