 At the same time, he attended Wageningen University from June 1968, majoring in Development economics and Civil engineering and eventually obtaining a Bachelor of Economics degree and a Bachelor of Engineering degree in June 1970 before graduating with a Master of Engineering degree in July 1971.Voorhoeve later studied at the Paul H. Nitze School of Advanced International Studies of the Johns Hopkins University in Baltimore, Maryland from July 1971 for a postgraduate education in International relations while working as a student researcher before graduating with an Master of Arts degree in August 1972.After graduating from Johns Hopkins, he received his doctorate as a Doctor of Philosophy in Political Science in November 1973.