The study addressed the effect of Colorado's 4-day school week on utilization of school facilities and the educational philosophy of superintendents of these schools. Data were obtained by sending a survey instrument to superintendents of 15 randomly selected Colorado school districts that had converted to a 4-day school week schedule. A portion of the survey instrument obtained data pertaining to the rank ordering of each day of the week in the following categories: co-curricular youth sport activities, other youth co-curricular activities (excluding sports), and community activities. The superintendents were asked their opinions on nine items that reflected aspects of the community educational philosophy. Major findings of the study were: (1) school districts had not markedly altered the scheduling of their co-curricular and community activities; (2) when pairing the superintendents' mean score on the opinionnaire with the amount of building use in that school district on their day off, it showed that superintendents that have a more community oriented philosophy may encourage more use of the school facility; and (3) there was no difference in the amount of building use when comparing school districts with Mondays off with school districts with Fridays off. (Author/AH)