Xiaohui (Dawn) Zhao, PhD

Director of Psychometrics

Xiaohui (Dawn) Zhao is the Director of Psychometrics at PTCB. 

Dawn has extensive experience in the measurement and certification industry and in-depth expertise in accreditation, measurement, and certification. She is an ISO/IEC 17024 assessor and has worked with many certification programs throughout the nation. She is currently a member of the National Commission for Certifying Agencies (NCCA) Accreditation Service Council.

Dawn has published  research papers in peer-reviewed journals on psychometric research, test development, and accreditation. She has presented on measurement and credentialing topics at numerous professional conferences.  

Dawn holds a PhD in Education Measurement & Statistics from the University of Iowa.