University of Oxford
Most colleges will teach at both undergraduate (the more basic first degree that a student takes) and postgraduate (a higher level of study) level. There are also some special colleges that are more restrictive. Five colleges only offer space to postgraduate students. Harris Manchester College is only for "mature students" (those who are over 21 when they start their degree). All Souls College does not take students – all of its members teach students or do research.