This directory provides an overview of the range of services offered by 48 college and school collaborations designed to strengthen the academic preparation of secondary school students for college. The programs selected for inclusion in the directory were those that directly serve students and have at least some of the 12 key characteristics identified for purposes of this descriptive profile. The resulting programs, located in 20 states and the District of Columbia, reflect a wide range of student populations and services. The program summaries are preceded by a summary matrix of the programs in alphabetical order by states. The summaries contain program highlights in a shaded box, and detailed descriptions of the programs, forms of evaluation, and any recognition the program may have received. The names, locations and telephone numbers of the program directors are provided in case further information is desired. Overall, some programs are targeted to all students in a school district, others emphasize math and science, some offer intensive academic preparation to a selected group of students through the high school years, others are created for unique populations of students, and some serve students wholly outside their normal school setting. (JB)