"Recruiting students without the academic ability to complete the course is not in universities' interests as it risks compromising their reputation, causes significant additional work in terms of supporting potentially poorly performing students, " Ms Dandridge added.
Our list is based on tuition, room and board, book costs, and other assorted fees from the 2011-12 academic year, the latest for which complete data is available.
Prof Christy makes the distinction - crucial to scientists - between draft papers for discussion and final, complete ones that go into academic journals and become part of the formal literature of science.