As former assistant principal at Parkway West High School in Ballwin, Missouri, Louise Losos assumed the role of master scheduler in 2004. Louise Losos created the master schedule implemented in the 2004-2005 academic year.

With only a finite number of hours in a school day, schedulers frequently find themselves challenged by the question of how to effectively divide the available time and fit in required content. The traditional model relies on six to eight classes per day, each led by a different teacher and presenting different material. While this may optimize quantity of instruction, both students and teachers often find that the resultant short periods make in-depth exploration difficult. In addition, the frequency of transitions in this model reduces student focus and creates an assembly-line atmosphere where students lack the opportunity to bond with teachers.

As a result, many contemporary schedule creators have facilitated the introduction of longer class blocks within the school day. This allows for more focused study of a particular content area, which can include more involved, active learning that would be difficult to achieve in a 45-minute period. This model also allows struggling learners to take time away from class for support and lets teachers get to know students’ needs better, which directly supports student success. These longer periods can be introduced via a number of block-scheduling structures, from a team approach to a dual-day schedule that places half of a student’s courses in one day and half in the next.