This handbook consists of five staff training packages, four of which constitute a series of four one-half-day workshops for institutional staff--administrators, faculty, librarians, and student services staff--who work with adults returning to school. These training packages may be used independently, sequentially over time, or together for an intensive two-day staff development program. The last training package is for admissions office and support staff and is designed for a whole-day workshop and separate delivery. Each staff training package includes a complete description of the training program, including objectives and procedures for planning and setting up sessions, ordering materials, photoready copies of handout material, and workshop evaluation forms. The package on research findings introduces faculty and staff to research previously conducted on adult commitment to return to school and to the 15 interventions based on that research. The package on academic advising and counseling staff focuses on their role in facilitating adult formulation of commitment. The training package on adult commitment helps staff both to develop understanding of adult concerns relating to the admissions process and to promote adult learning during that process. The package on educational planning resource center focuses on training faculty and staff on the use of the center during the admissions process. The final package is designed to sensitize those working with adults during the admissions process to the interests, motivations, and apprehensions of adults applying for entrance to postsecondary institutions. Appendixes to each package contain handouts, transparencies where applicable, and other relevant materials. (YLB)