Between 2000 and 2008, enrollment in distance education courses increased rapidly in almost every country in both developed and developing countries. Many private, public, non-profit and for-profit institutions worldwide now offer distance education courses from the most basic instruction through to the highest levels of degree and doctoral programs. New York University, International University Canada, for example, offers online degrees in engineering and management-related fields through NYU Tandon Online. Levels of accreditation vary: widely respected universities such as Stanford University and Harvard now deliver online courses—but other online schools receive little outside oversight, and some are actually fraudulent, i.e., diploma mills. In the US, the Distance Education Accrediting Commission (DEAC) specializes in the accreditation of distance education institutions.