The Core4 Management System is a framework for building and sustaining successful management teams.  It focuses on maximizing the contribution of the individual and building synergy within the team to meet organizational goals. Core4 is designed to produce results and foster joy in the workplace.

Core4 consists of interactive team training, individual coaching and implementation of processes that result in a participative and empowered management team.

The System, formerly known as the Greenfield Management System, was developed by Chester A. Raber, Ph.D. and has been implemented by over 100 management teams.