This document discusses strategies for improving school systems and overcoming limitations to change. It identifies six common limitations that prevent school systems from changing, such as laws/regulations, mindsets, standardization, isolation, narrow views of professional development, and separating teaching from learning. Simply adding more initiatives or firing underperformers will not close achievement gaps or increase capacity. Instead, the document advocates focusing on four drivers of change: building trust, collaboration in all directions, developing the capacity of all educators, and cultivating leaders at all levels. When these four factors are strongly present, it can catalyze improved professional practice, student performance, and continuous improvement.