Durham University there is no formal teaching at Durham colleges (with the exception of Cranmer Hall theological college within St John's), although colleges are active in research. The colleges dominate the residential, social, sporting, and pastoral functions within the university, and there is heavy student involvement in their operation. Formal dinners (known as "formals") are held at every college; gowns are worn to these events at just over half of the colleges. Gowns are not worn for formals at Collingwood, St Aidan's, St Cuthbert's, Hild Bede, Van Mildert, Stephenson or Ustinov. There is a great deal of intercollegiate rivalry, particularly in rowing
Van Mildert College, Durham as of 2012 Van Mildert College has been twinned with Halifax College, University of York. David Harper is the current Principal of the College, a palaeontologist and former Professor of Palaeontology in the University of Copenhagen. The following list is of the past Masters & Principals of the College: The college has two fellowships for visiting scholars; the Arthur Prowse Fellowship, named after the College's first Master, and the Arnold Bradshaw Fellowship. The fellowships are typically awarded for one academic term in conjunction with the Institute of Advanced Study with the fellow residing in the College and becoming a member