 He also served as an external examiner for Fine Art, Art History and sometimes History, Geography in Kenya, Uganda, Tanzania, Malawi, Zambia, Zimbabwe, the United Kingdom, the US, Canada, Ghana and Nigeria.Between Kyambogo and Dar es Salaam from 1967 to 1973, Ntiro was Commissioner of Culture for the Government of the United Republic of Tanzania.The Department was first in the Ministry of Education and then moved to the Ministry of National Culture and Youth.