Hallie Kay Yopp is a Professor in the Department of Elementary and Bilingual Education at California State University, Fullerton where she was named Outstanding Professor of the Year. She teaches courses in literacy in the credential and graduate programs. Her professional activities include engaging in research, writing, serving on editorial boards for professional journals, and working with the community. Hallie was a public school teacher for ten years, primarily in bilingual settings. An inductee into the California Reading Hall of Fame, she was also honored with the California State University Systemwide Wang Family Excellence Award. Hallie currently is Co-Director of the California State University 23 campus system's Center for the Advancement of Reading.

Ruth Helen Yopp is a Professor in the Department of Elementary and Bilingual Education at California State University, Fullerton. She teaches literacy theory and pedagogy to pre-service and graduate students, writes on topics of literacy and classroom teaching, directs several teacher development projects, and works closely with teachers in local schools. Ruth is actively involved in university, state, and regional committees and serves on the editorial boards of several literacy journals. Ruth taught in the public schools for ten years prior to joining the university faculty and was the recipient of district and county awards for her teaching. She is an inductee into the California Reading Hall of Fame.