A total sample of three 4-1-4 calendar/curriculum institutions and two control programs were selected for participation in this evaluation research project. Data were collected in three separate but related phases: compilation of institutional data, questionnaire, and interviews. The study concentrated upon the impact of the interim term upon the entire operation and functioning of the college during the wing semesters (fall and spring). The major focus of the analysis was the total impact at each college, rather than the separate and independent evaluations of the three interim term programs. Findings indicate a favorable reaction to 4-1-4 curriculum; however participating colleges indicated a lax attitude in defining and operationalizing exactly what the interim term does and should accomplish. Recommendations are suggested. The 4-1-4 evaluation guidelines and phase II, an opinionaire survey, are included as related material under separate covers. (MJM)