St. Marys School
2620 W State St., Boise, ID 83702Open, per Google (checked Sep 20, 2026)
Key facts
- Tuition
- On the school’s website
- Grades
- PreK-8
- Students (K-12)
- 109
- Students per teacher
- 6
- Affiliation
- Roman Catholic
- From Boise center
- 2.4 miles
Can you use PCTC here?
Idaho publishes no school list
- About the list
- How the PCTC list works
- Applying
- The next window is January 15 to March 15, 2027.
Source: PCTC official source.
What you would pay here
- Net cost
- Not worked out: no verified 2026-27 tuition yet. See the school’s tuition page
School facts
- Teachers
- 19
- Student body
- Coeducational
- Diocese
- Diocese of Boise, ID
- Boys and girls
- 41% boys, 59% girls
- Setting
- City
- Member of
- National Catholic Educational Association
- School facts, kindergarten to grade 12: U.S. Department of Education, NCES Private School Survey 2023-24, read September 20, 2026.
Where this comes from. Something wrong? Tell us and we will fix it.
Students and school year
Enrollment over time
- 2019-20 to 2023-24
- 128 to 109, down 19 (15%)
- Path
- Peaked at 141 in 2021-22, then fell below where it started
Students by grade, 2023-24 (pre-K is not in the K-12 count)
- Largest grade
- Grade 3 (17)
- Smallest grade
- Grade 2 (7)
- Average a grade
- About 12
The school year
- Days in the school year
- 180
- Length of the school day
- 7 hours 15 minutes
- Hours of school a year
- about 1,310
- Kindergarten
- Full day, 5 days a week
- Classes, 2023-24
- In person
- Library or media center
- Yes
- Year, against Idaho
- 9 days longer than the 171-day median of 113 schools we list
- School day, against Idaho
- 30 minutes longer than the median of 6 hours 45 minutes (112 schools we list)
How it compares
- Students per teacher
- 6 here; median 10.3 at 45 ID elementary schools
- Size in Ada County
- Larger than 9 of 18 other schools we list
Student body, 2023-24
Shares of K-12 students by race and ethnicity, as NCES reports them.
- Grades, school year and student body: U.S. Department of Education, NCES Private School Survey 2023-24, read September 20, 2026.
- Earlier counts: NCES Private School Survey 2019-20 and 2021-22, read October 14, 2026.
- Comparisons: the private schools ChoiceFunded lists, as of this page’s last update.
St. Marys School tuition, and what PCTC pays
- Published tuition
- On the school’s own tuition page (found September 29, 2026)
- Nearby schools’ prices
- $9,100 to $19,423 a year, published by 2 private schools nearby. School by school
Idaho Parental Choice Tax Credit Refundable tax credit
- Award
- Up to $5,000 per student
- How it varies
- Up to $7,500 for a student with a qualifying disability. It follows the tax year, so 2026 expenses are claimed in early 2027.
Figures read from each program’s official pages, October 2, 2026. Sources and how to apply
What would you pay at St. Marys School?
Use $0 or more.
Tuition and fees PCTC pays You pay per year Spread over 10 months
- Ask the school
- Its full-year tuition and required fees; whether it takes Parental Choice Tax Credit; its application deadline. More questions to ask
Tuition at nearby private schools
| School | Published tuition | Year | Miles |
|---|---|---|---|
| St. Joseph's Catholic School | $9,100 | 2026-27 | 1.4 |
| Foothills School of Arts and Sciences | $18,627 to $19,423 | 2026-27 | 1.5 |
Each figure was read on that school's own website. Ranges run from the lowest to the highest grade band.
Other private schools nearby
| School | Grades | Students | Miles |
|---|---|---|---|
| Learning Tree | PreK-K | 9 | 1 |
| Wesleyan Preschool & Kindergarten | PreK-Transitional K | 14 | 1 |
| The Children's School of Boise | PreK-K | 3 | 1 |
| One Stone | 9-12 | 87 | 1 |
| St. Joseph's Catholic School | K-8 | 367 | 1 |
| Foothills School of Arts and Sciences | K-9 | not reported | 1 |
| Logan Christian Academy | K-7 | not reported | 2 |
| Hillside Academy | PreK-K | 3 | 2 |
Private schools
Next PCTC date: January 15, 2027 to March 15, 2027 (Application window for 2026 expenses).
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