Throughout the Sixties, having been invited by Hyppolite and Althusser, Derrida taught at the École Normale. In 1983, he became “Director of Studies” in “Philosophical Institutions” at the École des Hautes Études en Sciences Sociales in Paris; he will hold this position until his death. Starting in the Seventies, Derrida held many appointments in American universities, in particular Johns Hopkins University and Yale University. From 1987, Derrida taught one semester a year at the University of California at Irvine. Derrida’s close relationship with Irvine led to the establishment of the Derrida archives there. Also during the Seventies, Derrida associated himself with GREPH (“Le Groupe de Recherche sur l’Enseignement Philosophique,” in English: “The Group Investigating the Teaching of Philosophy”). As its name suggests, this group investigated how philosophy is taught in the high schools and universities in France. Derrida wrote several texts based on this research, many of which were collected in Du droit à la philosophie (1990, one part of this book has been translated into English as Eyes of the University. Right to Philosophy 2). In 1982, Derrida was also one of the founders of the Collège Internationale de Philosophie in Paris, and served as its first director from 1982 to 1984.