Colleges of Durham University mixed in 2005 with the admittance of male undergraduates. One college, Ustinov, admits only postgraduates. Durham operates a collegiate structure similar to that of the University of Oxford and the University of Cambridge, in that all colleges at Durham, being constituent colleges of a "recognised body", are "listed bodies" in the Education (Listed Bodies) (England) Order 2013 made under the Education Reform Act 1988. The "recognised body" in this case is Durham University. Though most of the Durham colleges are governed and owned directly by the University itself, and so do not enjoy the independence of colleges at Oxford and
St Cuthbert's Society, Durham Formal. Although the Bailey colleges are generally considered to be more traditional, St Cuthbert's Society generally employs a more informal approach; for example, unlike the other Bailey colleges its students no longer wear gowns except for congregation. The original seventh-century pectoral cross of St. Cuthbert was discovered when his grave was opened in 1827, and is now preserved in the cathedral treasury. The motto, "gratia gratiam parit", appears in the Adagia of Erasmus, a collection of Greek and Latin adages, and can be loosely translated as ‘friendship begets friendship’ or ‘kindness begets kindness’. The full coat of arms includes an