This report is a study of the science curriculum implementation policy of the National Science Foundation (NSF) with particular reference to "Man: A Course of Study" (MACOS). It includes the majority opinion of the ad hoc research group conducting the study and the minority opinion of one dissenting member. The majority views recommend that NSF continue precollege science curriculum activities, with the following changes: NSF and Congress responsibility for quality and content of curricula funded by NSF; creation of an ongoing needs assessment program to guide curriculum activities; addition of representative parents to curriculum reviewing and evaluating groups, especially for social science curriculum; complete and clearer policies in all NSF curriculum efforts; formal adoption of acknowledgment and disclaimer statements; and clear Congressional policy on royalty income and disposition. Regarding MACOS, the group recommends early phaseout and termination of MACOS implementation activities, renegotiation of publishing and royalty agreements, inclusion of acknowledgment and disclaimer clauses, insertion of cautionary statements to teachers, and encouragement of arranging parent previewing sessions and making the course optional. The minority view is that Congress should require NSF to discontinue its support of all course curriculum and development. (Author/ND)