The study looks into the diversities of ICT literacy in Southeast Asia by investigating cases in dominantly Catholic Philippines, dominantly Muslim Indonesia, and dominantly Buddhist Thailand. It aims to describe ICT literacy in the Philippines, Indonesia and Thailand by looking into instructional goals, processes, and outcomes as manifested in their respective ICT course syllabi, relative to their use of ICT in the foundational areas of higher education - instruction, research, and community outreach - via survey of teachers and students, and as shaped by the country's dominant religion, private education sector, and local community via interviews with teachers and students. The study is expected to provide a cross-cultural insight as to how ICT is used in secondary education in the ASEAN region as preparation for higher education.