A study focused primarily on building-level leadership by observing how principals in 12 high schools (11 public and 1 Catholic) engaged in planning a structural change from a traditional schedule with 45-minute periods to the 90-minute periods of a block schedule. Using a concerns-based model of change, principals' behaviors and teachers'…

Elements aiding block-scheduling implementation at an Ohio Catholic school include a supportive principal, systems thinking, adequate time and resources, benchmarks for quality, responsible faculty decision making, readiness-based staff development, democratic process, process/content coordination, a nonthreatening learning environment, and…