This annotated bibliography of commercially prepared training materials for management and leadership development programs offers 10 topical sections of references applicable to school principal training. Entries were selected by using the following criteria: (1) programs dealing too specifically with management in sales, manufacturing, finance, etc., are omitted, while only those designed for training private sector managers are included; (2) only "packaged programs," i.e., programs developed by commercial training or management consultants and made available to a broad market, are included; (3) only "stand-alone" programs, i.e., those that do not require a vendor-supplied trainer, are included; and (4) a maximum cost limit was arbitrarily set at $5,000. The 12 skills identified by the National Association of Secondary School Principals (NASSP) for assessing principal effectiveness served as a basis for categorizing the 49 entries under the following headings: judgment, organizational ability, decisiveness, leadership, sensitivity, stress tolerance, oral communication, written communication, personal motivation, and general. Information for each entry covers program title, vendor, price, topics, format, materials, methods, and references. An index of programs and an appendix of NASSP skills for assessment conclude the guide. (CJH)