St Joseph Convent’s, Port of Spain, 185 years of excellence 3 Days Ago At 185, St Jospeh's Convent, Port of Spain is the oldest secondary school in Trinidad and Tobago. - Trinidad’s oldest secondary school, St Joseph’s Convent, PoS, celebrates 185 years on April 5. This is an edited version of a commemoration of its anniversary submitted by the school. On January 29, 1836, six sisters from the Congregation of the Sisters of St Joseph of Cluny arrived at the wharf in Port of Spain, having travelled by boat from Martinique. They had been invited to come to Trinidad by Bishop McDonnell, prelate of the Catholic Church in Trinidad, for the purpose of “founding a house of education in which all classes and religions can receive a solid and adequate grounding.”