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As a Catholic School, St. Mary’s Institute has a philosophy based upon sound principles which have been enriched by the experience of the Catholic Schools and the Church throughout the centuries. The whole-hearted efforts and goals of the administration and teaching staff are dedicated to the interest of the students entrusted to our guidance and instruction. 


St. Mary’s Institute was founded in 1880 by Rev. John McIncrow and administered by the Sisters of St. Joseph of Carondelet.


SMI began with Grades K-12 and grew rapidly. In 1909, St. Mary’s Institute moved to

Forbes St. to accommodate the increasing enrollment.


In 1966, St. Mary’s Institute High School became a Diocesan Regional High School and was named Bishop Scully High School.


After the closing of Bishop Scully High School in 1990, St. Mary’s Institute moved to its present location off Upper Church St. on January 2, 1991.

  • 100% of our honors math students achieved mastery on the NYS Integrated Algebra Regents since its inception.

  • Our graduates meet or exceeded the NYS basic and proficiency standards in English Language Arts and Mathematics.

  • In 2014, two area high school valedictorians were graduates of SMI. In fact, many SMI graduates go on to receive a multitude of honors.


St. Mary's Institute receives support and guidance from historic St. Mary's Roman Catholic Church in Amsterdam, New York. 


St. Mary's is a Catholic community of faith, nourished by Word and Sacrament, who trust in the merits of Jesus Christ and are faithful to the Church's magisterium, seeking to live the Gospel in the world today through Liturgy and service.


SMI students live their Faith through

personal, Christian service.


SMI students are on a mission to achieve academic excellence.


SMI students are honest and are led by a strong moral compass.

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