Loughborough Grammar School (commonly LGS) founded in 1495 by Thomas Burton, is an independent school for boys in Loughborough, Leicestershire, England. The school has approximately 940 day boys and 60 boarders. It is one of three schools known as the Loughborough Endowed Schools, along with Loughborough High School and Fairfield Preparatory School. The Endowed Schools are separate independent schools in their own right but share a board of governors.