The integrated education of men and women at the same school facilities; co-ed is a shortened adjectival form of co-educational. Before the 1960s, many private institutions of higher education restricted their enrolment to a single sex. Indeed, most institutions of higher education—regardless of being public or private—restricted their enrolment to a single sex at some point in their history. “Coed” is an informal (and increasingly archaic) term for a female student attending such a college or university.