1 Understanding Program Diversification in Higher Education: A Comparison between Public and Private Sectors Pedro Teixeira a,b *, Vera Rocha a,b , Ricardo Biscaia a,b , Margarida Fonseca Cardoso a,c,d a CIPES, Center for Research in Higher Education Policies, Rua 1º Dezembro, 399, 4450-227 Matosinhos, Portugal b FEP – Faculty of Economics of University of Porto, Rua Dr. Roberto Frias, 4200-464 Porto, Portugal c ICBAS – Instituto de Ciências Biomédicas Abel Salazar, Largo Prof. Abel Salazar, 2 , 4099-003 Porto, Portugal d CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal *Corresponding author Pedro Nuno Teixeira (pedrotx@fep.up.pt) Faculty of Economics of University of Porto 4200-464 Porto Portugal Telephone: 00 351 229 398 790 Fax: 00 351 229 398 799