In this report the Comptroller General of the General Accounting Office (GAO) examines National Science Foundation (NSF) policies, procedures, and practices for developing, evaluating, and implementing precollege science education projects and their specific applications to "Man: A Course of Study" (MACOS). The topics investigated indepth and reported on are development, evaluation, and implementation of MACOS, including the obtaining of a commercial publisher for MACOS and the Education Development Center's (EDC) administration of royalty income. A number of recommendations are made to insure that NSF officials and recipients of its funds follow sound business practices in administering science education projects. A major point is that the U.S. Congress may wish to tighten project administrative controls by requiring NSF to report on income produced from science education projects which it authorizes its grantees and contractors to use. The Congress could then consider such income when reviewing NSF appropriation requests. (Author/ND)