Private institutions are organizations that operate independently of government funding and control. They can include schools, colleges, universities, and non-profit organizations. These institutions often rely on tuition fees, donations, and private grants to support their activities and programs. In the education sector, private institutions may offer specialized curricula or smaller class sizes compared to public schools. Examples of private institutions include Harvard University, Stanford University, and various private high schools. They may have different admission criteria and educational philosophies, allowing for a diverse range of learning environments.