A specific nontraditional teacher preparation program for mid-career and second-career teachers is the focus of this monograph. The program, implemented at San Jose State University in California, is characterized from multiple perspectives as are the participants and the outcomes. Analysis of this single program and its outcomes illustrates how the traditional familiar route to teacher certification can be expanded and enhanced by facilitating the entry of scientists and mathematicians into teaching as a second career. Fourteen papers related to this topic are organized under two broad headings: (1) Second-Career Science and Mathematics Teachers; and (2) Case Studies. The appendix contains copies of the application materials for the program. (DDR)