 Kapuuo was related to Samuel Maherero and was also the blood nephew of the first Namibian nationalist leader, Hosea Kutako.From 1944 to 1945 he taught at primary schools in Waterberg and Karibib, and in 1946 transferred to St Barnabas where he taught English.From 1950-1953 he was president of the South West African Coloured Teachers’ Association (SWACTA).