Sooyeon Kim was a principal psychometrician in the Center for Operational Solutions and Innovation (COSI) in the Research & Development division at ETS until September 2022. She earned a Ph.D. in educational psychology at the University of Georgia in 2000 and joined ETS in 2002. Before joining ETS, she worked as a management information specialist in the Center for Family Research at the University of Georgia. She managed longitudinal data sets and conducted statistical analyses involving several research projects funded by national institutes.
At ETS, she worked on the Praxis® teacher licensure testing program from 2002 to 2011 and conducted several research projects related to small-sample equating and equating for tests with constructed-response items. She also worked on the GRE® test from 2011 to 2015. Her work on the GRE focused on scale drift, the impact of misrouting under the multistage-testing environment, the effectiveness of scoring methods under multistage testing, and the impact of aberrant responses on scoring. She worked for the TOEIC® and WorkFORCE® tests from 2015 to 2017. She provided effective and appropriate support for TOEIC Listening and Reading test refinement. She conducted several investigations to evaluate the TOEIC Speaking imputation rule for missing ratings and the effectiveness of external MC linking on the TOEIC Speaking test. She rejoined the ETS Professional Educator Program (PEP) in 2017 and served as a statistical coordinator in PEP until she moved to COSI in 2020. From 2019 through 2022, she also served as an ETS associate editor.