St. Mary's Catholic School (Top Ranked Private School for 2026-27)

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Quick Facts (26-27)

Top Ranked ID School
Grades: Nursery/Preschool-8
Enrollment: 107 students
Acceptance rate: 97%
Average class size: 14 students
Application Deadline: None / Rolling
Source: ✓Verified school update

School Rankings

St. Mary's Catholic School ranks among the top 20% of private schools in Idaho for:

School Facts

Religious Affiliation

Catholic

Grades Offered

Grades Nursery/Preschool-8

Students By Grade

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Distribution of Students By Grade

Grade	St. Mary's Catholic School
Nursery	7
Pre-K	15
Kind	10
1	13
2	8
3	12
4	8
5	9
6	8
7	13
8	4

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Enrollment highest in Pre-K with 15 students, while Grade 8 is smallest at 4.

ADD/ADHD Support

Yes

Year Founded

1908

Summer School Offered

Yes

Summer Program Details

View Summer Program Details

School Calendar

View School Calendar

Awards

Blue Ribbon School - Selected in 2005

School Motto

SERVIAM (“I will serve”)

Student Body

Total Students

107 students

Student Body Type

Co-ed

% Students of Color

30%

State avg.: 15%

Academic Profile

Total Classroom Teachers

10 teachers

Student-Teacher Ratio

11:1

National avg.: 11:1

% Faculty w/Advanced Degree

20%

Average Class Size

14 students

Classroom Dress Code

Casual

khaki pants and polo shirts

School Membership(s)School Assoc.

National Catholic Educational Association (NCEA)
Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC)
Western Catholic Educational Association (WCEA)

Tuition & Financial Aid

Admission Deadline

None / Rolling

Tuition Notes

PS/PK is S900 per month or $8100 per year Grades K -8 tuition is $630 per month or $5670 per year, due to the number of teachers/staff needed for class instruction and childcare. Tuition does not cover the full cost of education. It is supplemented through fundraisers and endowment funds.

Summer Program Cost Notes

Call for cost per day

% on Financial Aid

30%

Acceptance Rate

97%

National avg.: 85%

Admissions Director

Sister Margaret Johnson, osu

Application URL

Online Application

Endowment Size

$2.3 million

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Sports

School Mascot

Lion

Extracurriculars

Total ExtracurricularsTotal Extra-curric.

2 extracurriculars

ExtracurricularsExtra-curric.

Arts and Music Programs:

St. Mary's Parish School offers music classes for all grades 4 X a week. Band classes are held for grades 3 to 8 and these classes are part of the school's curriculum.

Recreational Athletic Programs:

PE classes are held 4 X a week for all grades.

School Notes

VISION FOR EVERY ST. MARY'S SCHOOL STUDENT: Imagine your child...... Increasing daily in respectfulness, resourcefulness, and responsibility, focused daily on God's loving presence, being guided by devoted and professional teachers, being equipped to excel in one's life...and growing daily in confidence.
Imagine your child changing the world! St. Mary's Parish School does provide the foundation for these gifts Our goal? Each child becomes a dream maker and a world changer. Igniting, faith, knowledge, creativity and service

St. Mary`s Parish School's Mission is to encourage and challenge its students to grow tangibly in their relationship with God, as they strive to be life-long learners igniting their faith, knowledge, creativity, and service.

Source: Verified school update

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Frequently Asked Questions

What schools are St. Mary's Catholic School often compared to?

St. Mary's Catholic School is often viewed alongside schools like Logos School by visitors of our site.

What is the acceptance rate of St. Mary's Catholic School?

The acceptance rate of St. Mary's Catholic School is 97%, which is higher than the national average of 89%.

Does St. Mary's Catholic School offer a summer program?

Yes, St. Mary's Catholic School offers a summer program. Visit their summer school page for more information.

What is St. Mary's Catholic School's ranking?

St. Mary's Catholic School ranks among the top 20% of private schools in Idaho for: Oldest founding date.

When is the application deadline for St. Mary's Catholic School?

The application deadline for St. Mary's Catholic School is rolling (applications are reviewed as they are received year-round).

School Reviews

5 3/4/2020

Catholic or not, this is where you want your kids. They have generous scholarships — just ask. All grades learn Spanish. The math curriculum is robust. PE 4 days a week. My 8-year-old is picking up books and reading for fun. The school culture is radical generosity, appreciating each individual child for their gifts. It's not elitist at all - a stellar education made possible for working-class families. In my daughter's time there, she hasn't mentioned bullying or teasing once. St Mary's = happy, loving well-educated kids.

- Posted by Parent - Working Mom

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Did You Know?

The average private school tuition in Idaho is $9,323 for elementary schools and $10,830 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Idaho is 89% (read more about average acceptance rates across the country).