He completed the equivalent of high school (A-Level) at the Minor Seminary of Sanu, in the Diocese of Mbulu, from 1988 until 1990.
[1][2] He studied philosophy at the St. Anthony of Padua Major Seminary in Ntungamo, in the Diocese of Bukoba.
He then transferred to St. Paul Major Seminary in Kipalapala, in the Archdiocese of Tabora, where he studied Theology.
He and Archbishop Jude Thaddaeus Ruwa'ichi, of the Catholic Archdiocese of Dar es Salaam, represented Tanzania.
Bishop Kassala recommends the translation and publication of the Synod Document, which was produced by 400 international delegates and was approved in its entirety by Pope Francis.