After teaching for some time near
Chester, in 1895, he was appointed an inspector of national schools in Ireland. In 1897, he went to France and Belgium to assist an inquiry into the primary school curriculum. In 1905, he was appointed to the central office of the Commissioners of National Education, and a decade later was appointed junior secretary, the second-ranking officer in the department. Described by the historian Joseph Lee as a "hardline
Unionist", Bonaparte-Wyse remarked on the change of attitude in Dublin following the
Easter Rising of 1916: "there is a very menacing tone among the lower classes who openly praise the
Sinn Féiners for their courage and bravery". Following the
Partition of Ireland in 1922, Bonaparte-Wyse transferred to the
Northern Ireland Ministry of Education; he commuted to
Belfast weekly from his home in
Blackrock,
County Dublin. In 1927, he was appointed
Permanent Secretary, the only Roman Catholic at that grade in the service, and the last before the appointment of
Patrick Shea in 1969. Bonaparte-Wyse later became a civil service commissioner for Northern Ireland before retiring in 1939. He was a member of the
Royal Irish Academy, a
Knight of Malta, a Commander of the
Order of the British Empire, and a Companion of the
Order of the Bath. ==Personal life==