Formation is an ongoing process that fosters growth in the life of consecration to the Lord, as a response of the Sister to the work of the Holy Spirit that bids her to faithfulness to the call.

Formation is a life-long process, which involves discovery, testing, and bringing the vocation to its full maturity.

The formation of the Missionary Sisters of Mary Mother of the Church include the period of Aspirancy, Postulancy, Novitiate, temporary profession, perpetual profession and ongoing formation.