Chuck Colson, in a Breakpoint article, highlighted the need for Christian worldview training, and pointed to Summit Ministries as a great help to young people going off to college. Here's a helpful interview with John Stonestreet, executive director of Summit Ministries, together with a podcast of a similar interview. A Summit Ministries promotional video appears on a page with lots more information, including a wealth of resources and an invaluable links list.