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St. Mary School

About St. Mary School

St. Mary School is a Parochial School with grades pre-K through 8 in Centralia, Illinois, in the Diocese of Belleville.

  • We strive for academic excellence with amazing teachers 

  • Our students learn in a Christian environment with a daily virtue lesson.

  • Students attend Mass weekly

  • All students grades 1-8 are 1:1 with Chromebooks

  • All K-8 classrooms are equipped with Clear Touch Boards, experiences staff and IL Board certified teachers.

Mission Statement

St. Mary Catholic School in Centralia Illinois, founded in 1867, offers Pre-Kindergarten through Grade Eight education to members of St. Mary Parish and the community. In partnership with the parents and guardians, St. Mary Catholic School provides a Christian atmosphere that allows for the development of the whole child, striving to nurture acceptance, respect, self-discipline, and responsibility. Loving and caring for others are fostered through the teaching of the Catholic Faith and the living of Christian values. St. Mary Catholic School, a leader in the community, is dedicated to high standards of personal and academic achievement so that the students may reach their fullest potential. 

We appreciate the generosity of our donors!


If you'd like to give, please visit 

and specify that you would like your gift to go to Saint Mary School.