The National Network of Principals' Centers is an organization established to foster the exchange of ideas and facilitate professional communication among the many principals' centers and leadership academies in the United States and internationally. This 1988/89 edition offers listings of colleagues in this field from over 39 states and 4 foreign countries (Australia, Canada, England, and Indonesia). Organized in alphabetical order by state, the listings include the centers' names, addresses, contact persons, and brief descriptions of the centers' purposes and program features. An addendum to the directory includes six additional references. (SI)