Nestled in the Sierra mountain foothill town of Grass Valley, California, Mt. St. Mary Academy is steeped in history.  Founded in 1859 by the Sisters of Mercy, Mt. St. Mary has the distinction of being the oldest continuously operating Catholic school west of the Mississippi. Our school continues to enjoy an enthusiastic, supportive parish community, and it prepares students to become outstanding Catholics who excel in faith, academics, and service. We offer classes in Pre-Kindergarten through Eighth Grade.  Accredited by the Western Association of Schools and Colleges, Mt. St. Mary is proud of a fully credentialed staff of teachers, who are dedicated to their students and school community.  We enjoy a teacher:student ratio of 1:18.  A strong faith and academic foundation is emphasized, as children become engaged in the joy and responsibility of learning as a lifelong process. Using critical thinking and problem solving skills, students are encouraged to develop to their full potential.


TK daily schedule

K roundup

K roundup information packet

Mount St. Mary’s Academy (MSM) is currently accepting applications for the 2020-2021 school year!

Walk-in-Wednesday at Mount St Mary’s provides a convenient opportunity for parents to meet one-on-one with a member of the MSM team – no appointment necessary!  When school is in session, each Wednesday, between 11 a.m. and 2 p.m., team members will be available to offer campus tours and talk with you about all of the wonderful opportunities that await your student at Mount St. Mary’s Academy.

2020-21 PK/TK new student registration (children must be 4 years old by September 1, 2020 to be eligible for PK 2020/2021)

2020-21 K-8 new student registration

As of 8/6/2020 we are no longer taking registrations for 1st, 3rd, 4th, 5th and 8th grades. If you want to be placed on the waiting list, please call the school office at 530-273-4694.


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Our School is accredited by the Western Catholic Educational Association (WCEA) and is co-accredited by the Western Association of Schools and Colleges (WASC).