Public administration, the implementation of government policies. Today public administration is often regarded as including also some responsibility for determining the policies and programs of governments. Specifically, it is the planning, organizing, directing, coordinating, and controlling of government operations
the word 'public' is used in a variety of meaning, but here it means 'government'. Public Administration, therefore, simply means governmental administration. It is the study of the management of the public agencies that carry out public policies in order to fulfill the state purposes in the public interest.
The three branches are, Classical Public Administration Theory, New Public Management Theory and Postmodern Public Administration Theory. Each of these three branches study Public Administration from a different perspective.