entity that provides education as its main purpose, including, but not limited to, a school, college, university, or training center
- Note 1 to entry: Such institutions are often accredited or sanctioned by the relevant national, regional, or discipline-specific education authorities or equivalent authorities. Educational institutions may also be operated by private organizations, including, but not limited to, religious bodies, special interest groups, or private educational and training enterprises, both for-profit and non-profit.
- Note 2 to entry: Adapted from the UNESCO Institute for Statistics. 
- Note 3 to entry: An institution may be referred to as an organization (3.28), but not all organizations are institutions.