The seminary is Christ's home,

for the same roof shelters the Eucharistic Lord and the young men who having heard the Master's call have left all things to follow Him.

The Seminary of the Immaculate Conception, located in the Diocese of Rockville Centre, offers a comprehensive program of priestly formation according to the mind and heart of the Catholic Church. Dedicated in 1930 to serve in the preparation of priests for the Church on Long Island, the seminary has emerged as a unique community of formation which reflects the experience of the universal Church. The seminary currently includes men from the Diocese of Rockville Centre, Brooklyn, Kabale (Uganda), Konongo-Mampong (Ghana), Tshumbe (Democratic Republic of the Congo), and Daejeon (Korea). The seminary program also includes men from the Eastern Province of the Congregation of the Mission and the Major Archeparchy of Trivandrum. The Seminary desires to welcome other dioceses in the future.

Faithful to Pope John II's Post-Synod Apostolic Exhortation Pastores dabo vobis (1992) and the Program of Priestly Formation (2006) established by the United States Conference of Catholic Bishops, the program seeks to integrate the human, spiritual, intellectual, and pastoral components of priestly formation. The seminary also offers theological and pastoral training for qualified candidates for the Permanent Diaconate for the Diocese of Rockville Centre. In addition, the seminary offers various degree programs in theology for men and women, lay and Religious, who wish to be of greater service to the Church.

The Seminary of the Immaculate Conception seeks to imitate the first Christians who were dedicated to the teaching of the apostles and to the communal life, to the breaking of the bread and to the prayers (Acts 2:42). Like St. Paul, who handed on what he received (1 Cor 15: 3), the seminary hands on the life and tradition of the Catholic faith in the context of the new evangelization in the third millennium.

As Pope John Paul II, the Servant of God, said in Pastores dabo vobis (1992), a seminary is to form priests with the heart of Jesus, the Good Shepherd. The Seminary of the Immaculate Conception is committed to this goal. To accomplish such a noble mission relies on a daily life of prayer in communion with the universal Church. The heart of that communion is the daily celebration of the Eucharist, and the constant invocation of the Blessed Virgin Mary, the Mother of the Church.