Efforts to address the problems of access and achievement for minorities and women in mathematics and science have been focused primarily at the secondary level. However, it has become increasingly apparent that intervention needs to begin earlier. This directory identifies and briefly characterizes intervention programs serving young minority and/or female students. The directory is organized into several sections. The "Procedures" section describes the process used to identify, collect, and verify program information. The "Summary of Findings" section includes a discussion of how programs characterize themselves, whom they serve, where the programs are located, and what are the most prevalent service delivery models. In addition, gaps in service delivery are identified and recommendations to address these needs are provided. The last section of the directory provides information on individual programs and contains a listing by state of program names and contact people. This section also includes: (1) a table of Program Features, which shows the subject areas, student activities, program format, and the average contact time per student; and (2) a table of Students Characteristics, which provides information on ethnicity or race, grades, and number of middle school (grades 4-8) students served. Contains 21 references. (MKR)