Intramural

Intramural sports or intramurals are recreational sports organized within a particular institution, usually an educational institution, or a set geographic area. The term, which is chiefly North American, derives from the Latin words intramuros meaning "within walls", and was used to describe sports matches and contests that took place among teams from "within the walls" of an institution or area. The term dates to the 1840s. It is contrasted with extramural, varsity or intercollegiate sports, which are played between teams from different educational institutions. The word intermural, which also correctly means "between institutions", is a common error for "intramural".

The first intramural sports departments were established at Ohio State University and the University of Michigan in 1913.Elmer Mitchell, a graduate student, at the time, was named the first Director of Intramural Sports at the University of Michigan in 1919 and the first recreational sports facility in the country opened at the University of Michigan. Mitchell is considered the "father of intramural sports" and taught a class in intramural sports taken by William Wasson, founder of the National Intramural Association (NIA), the forerunner to the National Intramural and Recreational Sports Association (NIRSA).

Mitchell later authored Intramural Athletics (ED Mitchell - AS Barnes, 1928), and Intramural Sports. He co-authored Intramural Sports with Pat Mueller.

Today, "intramural" tournaments are still organized within a specific community or municipal area, between teams of equivalent age or athletic ability. For example, intramural sports programs are often organized on college campuses to promote competition and fun among the students and teachers sometimes.

For most schools and campuses, intramural sports are used to promote wellness and allow students who do not compete on a national (NCAA) level an opportunity to be active.

NIRSA: Leaders in Collegiate Recreation, formerly known as the National Intramural Recreational Sports Association, a professional organization based in Corvallis, Oregon, provides a network of more than 4,500 highly trained professionals, students and Associate Members in the recreational sports field throughout the United States, Canada and other countries. In most of the world outside North America, sports scholarships and college sports on the North American model do not exist so the distinction between college and intramural sports has no relevance and is not made.

...
Wikipedia