Describes a professional development system focusing on seven specific instructional strategies that was developed and implemented at an inner-city high school in San Diego, California. Reports improvement in student achievement. (PKP)

Achieving flexibility without losing student accountability is a challenge that faces every school. With a fluid block schedule, as described here, accountability is maintained without inhibiting flexibility. An additional advantage is that three levels of schedule decision making take some of the pressure off the principal. (Editor)

The educational changes that seem to offer the greatest long-term benefits are those that focus on modifying the behaviors of teachers, administrators, and students in the interest of good schools. (Author/MLF)