Rodger W. Bybee is Chair of the Science Forum and Science Expert Group and was a Questionnaire Panel Consultant for Program for International Student Assessment (PISA) 2006. Until 2007, Dr. Bybee was Executive Director of the Biological Sciences Curriculum Study (BSCS), a non-profit organization in Colorado Springs, Colorado that develops curriculum materials, provides professional development for the science education community, and conducts research and evaluation on curriculum reform. Prior to joining BSCS, he was Executive Director of the National Research Council's (NRC) Center for Science, Mathematics, and Engineering Education (CSMEE), in Washington, D.C. Between 1985 and 1995, he participated in the development of the National Science Education Standards, and between1992- 1995 he also chaired the content working group of that NRC project.