Flash video with captions
Value-added Models and Test Scores from Students with Disabilities
Using VAM to evaluate educators of students with disabilities is a hot-button issue due to concerns about the model's ability to accurately attribute student growth, to educators who work across a variety of settings. This video provides a brief review of the purpose of value-added modeling as well as the pros and cons of its use. It also introduces some research and policy questions related to Value-Added Models for teachers of students with disabilities, and provides one research example.
Heather Buzick is a Research Scientist in the Center for Foundational & Validity Research at Educational Testing Service (ETS) in Princeton, NJ. At ETS, Dr. Buzick has been involved in measurement and statistical modeling for students with disabilities, which includes topics such as differential item functioning, growth modeling, validity and fairness and test accommodations.