Definition of Educational Institution
A school, seminary, college, university, or other educational establishment, not necessarily a chartered institution. As used in a zoning ordinance, the term may include not only buildings, but also all grounds necessary for the accomplishment of the full scope of educational instruction, including those things essential to mental, moral, and physical development. Commissioners of District of Columbia v. Shannon & Luchs Const. Co., 57 AppJD.C. 67, 17 F.2d 219, 220.
That's the definition of Educational Institution in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.