But now some 20 states are overhauling their evaluation systems, and many policymakers involved in those efforts have been asking the Gates Foundation for suggestions on
what measures of teacher effectiveness to use, said Vicki L. Phillips, a director of education at the foundation.
Not exact matches
Using
what the city calls a «new framework for
measuring teacher effectiveness» instituted in December, principals approved fewer
teachers for tenure this year — 58 percent
of 5,209
teachers as opposed to 97 percent
of those eligible in 2006 - 7.
The foundation also announced today that as part
of its plan to promote and support effective teaching it is investing $ 45 million in research to better understand
what makes a
teacher effective and how such
effectiveness can be
measured.
As districts grapple with implementing statutory requirements for annual evaluation, a common pain point has been the use
of student growth and assessment data, including properly understanding
what the legislation requires, which
measures to use, how to aggregate growth
measures for
teachers and administrators, and reliably scoring for 25 %
of an
effectiveness rating.
Teachers should have the aforementioned school community goals and the
teacher's own goals for students in mind and determine
what will best
measure the
effectiveness of the new practice in improving students learning experience.
Teaching is entirely over scrutinized —
what other profession has a multitude
of evaluators who sit in the worker's cubicle, office, or warehouse and take verbatim notes
of what is seen and heard, then evaluates them with no objective means because there is simply no way to objectively
measure a
teacher's
effectiveness to ALL students.
Artificial inflation is a term I recently coined to represent
what is / was happening in Houston, and elsewhere (e.g., Tennessee), when district leaders (e.g., superintendents) mandate or force principals and other
teacher effectiveness appraisers or evaluators to align their observational ratings
of teachers»
effectiveness with
teachers» value - added scores, with the latter being (sometimes relentlessly) considered the «objective
measure» around which all other
measures (e.g., subjective observational
measures) should revolve, or align.
Put differently,
what VAM - based data provide, in general, «are incredibly imprecise and inconsistent
measures of supposed
teacher effectiveness for only a tiny handful [30 - 40 %]
of teachers in a given school» (see reference here).
Accordingly, and also per the research, this is not getting much better in that, as per the authors
of this article as well as many other scholars, (1) «the variance in value - added scores that can be attributed to
teacher performance rarely exceeds 10 percent; (2) in many ways «gross» measurement errors that in many ways come, first, from the tests being used to calculate value - added; (3) the restricted ranges in
teacher effectiveness scores also given these test scores and their limited stretch, and depth, and instructional insensitivity — this was also at the heart
of a recent post whereas in
what demonstrated that «the entire range from the 15th percentile
of effectiveness to the 85th percentile
of [
teacher]
effectiveness [using the EVAAS] cover [ed] approximately 3.5 raw score points [given the tests used to
measure value - added];» (4) context or student, family, school, and community background effects that simply can not be controlled for, or factored out; (5) especially at the classroom /
teacher level when students are not randomly assigned to classrooms (and
teachers assigned to teach those classrooms)... although this will likely never happen for the sake
of improving the sophistication and rigor
of the value - added model over students» «best interests.»
That second finding, in particular, will have a positive impact if it prompts school districts to clearly define
what teacher effectiveness looks like and to
measure professional development programs in terms
of how they help
teachers get closer to that goal.
Teaching, and the measurement
of teacher effectiveness, are complex issues:
What do
teacher evaluation systems
measure?
The sooner Gates issues a public correction, the sooner we can move beyond this dispute over
what is actually a sidebar in their report and focus instead on the enormously interesting project on which they've embarked to improve
measures of teacher effectiveness.
By design, SGP models do not purport to provide causal estimates
of teacher effectiveness (though this does not necessarily imply that they are less accurate
measures); they are intended as a descriptive
measure of what is —
of test score gains relative to other students who scored similarly in the past.»
What form
of guidance has the U.S. Department
of Education provided to states that are using VAM to
measure teacher effectiveness?
This chapter examines the makeup
of the current
teacher workforce in the United States, exploring trends and changes over time and
what is known about how some
of these demographic factors relate to
measures of effectiveness.
Measuring Teaching Matters:
What Different Ways
of Looking at Student Results Tell Us About
Teacher Effectiveness [PDF, 1.4 MB]