1 The Impact of Vertical Scaling Decisions on Growth Projections: A Two Act Play Derek Briggs Jonathan Weeks Ed Wiley University of Colorado, Boulder Presentation at the annual meeting of the National Council of Measurement in Education. March 26, 2008. New York, NY.
18
Embed
The Impact of Vertical Scaling Decisions on Growth Projections: A Two Act Play
The Impact of Vertical Scaling Decisions on Growth Projections: A Two Act Play. Derek Briggs Jonathan Weeks Ed Wiley University of Colorado, Boulder. Presentation at the annual meeting of the National Council of Measurement in Education. March 26, 2008. New York, NY. Curtains Up. - PowerPoint PPT Presentation
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
1
The Impact of Vertical Scaling Decisions on Growth
Projections: A Two Act Play Derek Briggs
Jonathan WeeksEd Wiley
University of Colorado, Boulder
Presentation at the annual meeting of the National Council of Measurement in Education. March 26, 2008. New York, NY.
2
Curtains Up
PLOT SYNOPSIS• Growth models require some form of
longitudinal data.• Implicit assumption that test scores have a
consistent interpretation over time.• There are multiple technical decisions to
make when creating a vertical score scale.• Do these decisions have a sizeable impact