Phi Delta Kappa; Association of Vocational Agriculture Teachers.
Chief of Section & Senior Officer, Education Sector, United Nations Educational, Scientific and Cultural Organization since 1979. Professor & Chairman, Department of Agr Education, University of the Philippines at Los Banos College, and Project(s) Manager, Training Programme for Graduate Studies in Agr, South-East Asian Regional Center, 1975-1978. United Nations Educational, Scientific and Cultural Organization Expert in Agr Education, United Nations Educational, Scientific and Cultural Organization, Iran, 1974-1975.
Assistant Professor & Chairman, Agr Education Department, University of the Philippines, 1968-1974. Graduate Assistant, Department of Agr Education, Cornell University, Ithaca, New York, 1965-1968. Instructor, College of Agriculture, University of the Philippines, 1959-1964.
Vocational Agr Teacher, National Agr High School, Philippines, 1957-1958.