St. Jude’s Christ Army Church School, Creek Road, Port Harcourt, Rivers State. 1960 - 1966
Union Girls Grammar School (UGGS), Rainbow Town, Port Harcourt. 1966 - 1967
St. Catherine’s Nkwerre, Imo State 1970 - 1973
ArchDeacon Crowther Memorial Girls Secondary School, (ACMGS), Elelenwo, Port Harcourt, Rivers State. 1973 - 1974
St. John’s College, Diobu, Port Harcourt, Rivers State. 1974 - 1975
Federal Advanced Teacher’s College (FATC), Okene, Kogi State. 1975 - 1978
University of Ibadan, Oyo State. 1980/81 - 1987
Imo State University, Owerri, Imo State. 1999 - 2002
Imo State University, Owerri, Imo State 2020 - 2022
Gabriel, A.O.I. (1988). The Influence of some Educational Ideas of Selected Nigerian Educators on the Development of Education in Nigeria, Ogele. Journal 3 of the Social Sciences and Humanities, Institute of Foundation Studies, RSUST, Port Harcourt, 3(1), 42-54.
Gabriel A.O.I. (1989). The Development of Secondary School Education in Rivers State of Nigeria: 1967-1983. Ogele Journal of the Social Sciences and Humanities, 4(1) 47-55. Institute of Foundation Studies, RSUST, Port Harcourt.
Gabriel, A.O.I. (2000). Women Empowerment in the Niger Delta: Past, Present and Future. Otuogal, Journal of Niger Delta Research, 2 (2) 21-39. Institute of Foundation Studies, RSUST
Gabriel, A.O.I. (2004), Women in the Niger Delta: Environmental Issues and Challenges In the 3 Millennium. Journal of Sustainable Development in Africa. 6 (2) 10-18, Fayetteville Slate University, Fayetteville, North Carolina, U.S.A. Fall 2004