ABSTRACT
Needs of districts and schools require personalized development of schedules. Consequently, framework variety offers opportunities for schedule builders to meet those needs. Primary frameworks remain fixed and allow inserts to provide flexibility within the schedule. The primary scheduling choice forms the overall structure and provides the basis of the major design of the master schedule. In essence, the principal controls movement and sequence in this schedule in which all classes begin and end at the same time. Most often, only high schools use a trimester schedule, but middle schools sometimes use it for their exploratory/elective classes to provide longer exposure to those classes. In the trimester schedule, the school year is divided into three equal 12-week periods. Inserts exist as subsets or independent variables within any of the primary frameworks to create the master schedule. Double periods in English and math appear in elementary and middle schools as well as freshman academies.
