St. Mary's Grade School was established in 1878 as St. Mary's Academy and Boarding School, Bismarck's first school; St. Mary's served as the only Catholic School in Bismarck for nearly 70 years and as such set the standard for Catholic School education.
St. Mary's Grade School is one of five schools within the Light of Christ Catholic School system. Light of Christ Schools began in 2012.
St. Mary's Grade School offers a modern educational program in which students learn mathematics, morality, fine arts, faith and love in small classes taught by caring teachers.
The 275 children at St. Mary's Grade School have opportunities to discover themselves as scholars, leaders, stewards, thinkers and artists.
We also boast top-notch facilities that include a library, an art room, gymnasium and music classroom.
Continuing in this rich tradition, St. Mary's Grade School is committed to the mission of LIght of Christ Schools: Encountering Christ in our Catholic Faith through living, learning and serving.
Quick Facts (2025-26)
- Grades: Prekindergarten-5
- Enrollment: 265 students
- Average class size: 15 students
- Application Deadline: None / Rolling
- Source: Verified school update
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades Prekindergarten-5
Last Day of School
Mon. May 25, 2026
Student Body
Total Students
265 students
Student Body Type
Co-ed
% Students of Color
7%
State avg.: 14%
Students by Grade
Academics and Faculty
Total Classroom Teachers
15 teachers
Student-Teacher Ratio
18:1
National avg.: 13:1
Average Class Size
15 students
Classroom Dress Code
Formal
School uniforms required for grades kindergarten through 5th grade.
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Application URL
School Notes
- St. Mary's Grade School was established in 1878 as St. Mary's Academy and Boarding School, Bismarck's first school; St. Mary's served as the only Catholic School in Bismarck for nearly 70 years and as such set the standard for Catholic School education. St. Mary's Grade School offers a modern educational program in which students learn mathematics, morality, fine arts, faith, and love in small classes taught by caring teachers. The 275 children at St. Mary's Grade School have opportunities to discover themselves as scholars, leaders, stewards, thinkers, and artists.
- We also boast top-notch facilities that include a library, an art room, gymnasium and music classroom. Continuing in this rich tradition, St. Mary's Grade School is committed to the mission of LIght of Christ Schools: Encountering Christ in our Catholic Faith through living, learning and serving.
Source: Verified school update
Frequently Asked Questions
What schools are St. Mary's Grade School often compared to?
St. Mary's Grade School is often viewed alongside schools like St. Anne School by visitors of our site.
When is the application deadline for St. Mary's Grade School?
The application deadline for St. Mary's Grade School is rolling (applications are reviewed as they are received year-round).
School Reviews
Endorse St. Mary's Grade School. Endorsements should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
- Academic or athletic awards
Recent Articles
Transferring from Public to Private School Mid-Year: What to Expect
Considering a mid-year transfer from public to private school? Learn what to expect with admissions, academic placement, social adjustment, and financial aid to ensure a smooth transition.
A Guide to Day vs. Boarding School: Which Is Right for Your Family
Discover the key differences between day and boarding schools to determine the best fit for your child. Explore benefits, costs, lifestyle factors, and questions to help guide your family’s decision.
The A to Z of Private Schools 2025
Explore the A to Z of private schools in 2025—from admissions to tuition—offering parents and educators clear insights into today’s options.
