This publication offers suggestions for making more productive use of time, a scarce and valued educational resource. The chapter authors, authorities on the use of educational time, write about how to extend and enhance learning time within and outside schools. In "Productive Use of Time," Herbert Walberg describes how learning time can be extended and enhanced by using psychological principles. In "Cycles, Rhythms, and the Meaning of School Time," Michael Connelly and Jean Clandinin suggest that annual cycles of holidays and weekly cycles (such as review and assessment) create rhythms of experience that control the intensity of instruction. Lorin Anderson, in "What Time Tells Us," differentiates among several kinds of educational time to provide insights on classroom management, instructional quality, and student learning. In "Changing the Cosmology of the School Schedule," Fenwick English discusses nonlinear scheduling alternatives. Charles Ballinger argues in "Year-Round Education: It's Time" that it is possible to introduce flexibility into the organization of the school year. Laurence Steinberg shows, in "The Use of Out-of-School Time," that extracurricular activities influence students' learning and classroom engagement. The final chapter summarizes recommendations for extending and enhancing learning time. (LMI)