جامعة بيت لحم
In addition to senior administrative responsibilities at Bethlehem University, during his tenure at Bethlehem University, Hassassian made scholarly contributions in the field of political science with the publication of over 100 reviews, articles and chapters, including Palestinian Political Culture, Civic Society and the Concept of Citizenship, The Transformation of Palestinian Civil Society and its Role in Developing Democratic Trends in the West Bank and Gaza Strip, and Historical Justice and Compensation for Palestinian Refugees. Hassassian also served as a consultant to the Higher Ministerial Committee for Church Affairs, the Ministry of Planning and International Cooperation, UNESCO, the Palestinian Negotiating Team on Refugee Final Settlement, the Orient House P.L.O. Office in Jerusalem as Chief Political Advisor to the late Faysal Husseini, Minister of State Affairs – Head of the Jerusalem File, and the Ministerial Commission on Refugees, among others.