comparing the purchase of education to the purchase of a house - bring home the huge risk a student takes choosing a school and a program. Many walk into education - not really able to grasp the opportunity or to mount the skills needed - at least initially, and need extra coaching and guidance. The real job is not to just keep a student/pass a student, but to equip and train a student to become self directed and capable. A strong mentor can go a long way but cannot substitute from the work the student must do. An instructor/leader has to understand the professional boundary to maintain integrity.
