In 1966 a decision was made to begin operating the University of California at Berkeley on a year-round basis. Included in this report are discussions of year-round education in general; various methods of year-round education, including the semester summer session plan, the quarter plan, and the trimester plan; and background, implementation, and evaluation of the quarter system at Berkeley. Appendixes include materials dealing with curriculum revision, course listings, summer quarter enrollment, and student reactions. (LLR)