Christina K. Tydeman, Ph.D., an executive director of research and evaluation at McREL International, currently serves as the director of the Regional Educational Laboratory for the Pacific Region (REL Pacific). In this role, Dr. Tydeman brings forth substantial experience supporting education program improvement through formative learning and large-scale assessments, development and use of educational data systems, program evaluations, and professional development for teachers and leaders. She has contributed over 35 years toward improving the instructional practices of educators and the outcomes for students in the K–12 and postsecondary settings in both public and private sectors. She holds a master’s degree in education with emphases in curriculum and instruction and multicultural education from Dominican University of California and a doctorate in educational psychology from the University of Hawai‘i at Mānoa.

Bradley Rentz, Ph.D., a senior researcher at McREL International, has served as the principal investigator for multiple applied education research studies and as the project lead for technical assistance projects on education language policy, culturally sustaining instructional models, applied quantitative research, and systemic improvement. Prior to joining McREL, Dr. Rentz served as an instructor at the University of Hawai‘i at Mānoa in the Department of Linguistics and as a middle school teacher on Pohnpei in the Federated States of Micronesia (FSM). He also has linguistic fieldwork experience in FSM, with a focus on language attitudes and ideologies. Dr. Rentz holds a B.A. in Linguistics and German Language and Literature from Marquette University and an M.A. and Ph.D. in Linguistics from the University of Hawai‘i at Mānoa.