Value-added Models and Test Scores from Students with Disabilities

Heather Buzick

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.

Video

Flash video with captions

Value-added Models and Test Scores from Students with Disabilities – Heather Buzick

Bio

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.

Accompanying Materials

Presentation - Value-added Models and Test Scores from Students with Disabilities