Lisa Keller earned her B.S. in mathematics magna cum laude in 1993 from St.
Michael’s College in Winooski, VT. She earned an M.S. in mathematics with a statistics
concentration in 2001, and an Ed.D. in psychometrics from the University of Masaschusetts
in 2002.Since then, she has been in the Research and Evaluation Methods Program. Her
research interests focus around areas of equity in K-12 testing, especially in the
context of equating and assessing changes in student achievement. Additionally, Dr.
Keller is interested in measures of reliability, especially including generalizability
theory. Dr. Keller also engages in consulting both within education as well as in other
areas of social sciences. She also does consulting work for various market research
firms.

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The Effect of Deleting Anchor on the Classification of Examinees (with Tia Sukin), NERA Conference Proceedings 2008 (2008)

The presence of outlying anchor items is an issue faced by many testing agencies. This...