In 2003, administrators at Stanford University's Electrical Engineering Department were startled when a group of foreign students aced the notoriously difficult Ph.D. entrance exam, getting some of the highest scores ever. That the whiz kids weren't American wasn't odd; students from Asia and elsewhere excel in U.S. programs. The surprising thing, say Stanford administrators, is that the majority came from one country and one school: Sharif University of Science and Technology in Iran.

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