This document provides an overview of the evolution of management theory from early thinkers like Machiavelli and Sun Tzu to modern schools of management. It describes Scientific Management founded by Frederick Taylor based on time and motion studies. Classical Organization Theory developed by Henry Fayol emphasized division of work, authority, and discipline. Max Weber's bureaucratic model focused on hierarchy, rules, and impersonal relationships. Later theorists like Mary Parker Follett emphasized participative leadership and group network management.