Organizational Health Diagnostic & Development Corporation (OHDDC) has spent over three decades at the forefront of improving student achievement by addressing the culture and leadership within U.S. schools. We understand that culture is the foundation of student success, and leadership is the key to unlocking that potential.
Founded by Dr. Marvin Fairman, OHDDC’s team developed the Organizational Health Instrument (OHI), a groundbreaking tool for measuring the ten dimensions of organizational health, originally identified by Dr. Matthew Miles of Columbia University. The OHI has proven to have predictive validity, giving us—and the schools we work with—confidence that the data we gather can drive real, sustainable improvements.
Today, OHDDC proudly maintains the most comprehensive database on culture and leadership in American public schools. Our research spans tens of thousands of campuses nationwide, empowering schools to navigate complex challenges and foster environments where both educators and students thrive.
At OHDDC, we’re more than just consultants—we’re former classroom teachers, principals, supervisors, and superintendents. We’ve walked in your shoes. We understand the daily pressures of building a positive school culture, retaining talented educators, and driving student achievement. That’s why our mission is to deliver data-driven insights, practical leadership strategies, and sustainable solutions tailored to the unique needs of each campus.
We’ve seen firsthand how school culture shapes outcomes—and we’re here to help you strengthen yours, no matter where you’re starting from. Whether you’re working to improve teacher morale, align leadership, or boost student performance, we’re ready to partner with you. Together, we’ll create a customized plan that builds on your school or district’s strengths and addresses its specific opportunities—all within your existing structure and resources.
