Catholic schools in Idaho
17 statewide. Parochial, diocesan and independent Catholic schools.
Catholic schools in Idaho at a glance
- Share of the state’s private schools
- 12%, 17 of 144
- Towns
- 12; the most in Boise (5) and Rathdrum (2)
- Counties
- 9 with at least one
- Students
- about 3,615 in all; the typical school has 157
- Smallest and largest
- St. Joseph Seminary, 12 students; Bishop Kelly High School, 967 students
- Students per teacher
- 13.5 typical, 6 to 17.9 across 16 schools
- Co-ed or single-sex
- 2 all-boys; the rest co-ed
- Association members
- 13, most often the National Catholic Educational Association
- To a 4-year college
- 0% of graduates at the typical high school (4 reporting)
- State program
- Refundable tax credit, up to $5,000 per student
How PCTC works
- Pre-K (and up)12
- Elementary (K to 5)15
- Middle (6 to 8)14
- High school (9 to 12)4
- K to 12, one school2
- Under 503
- 50 to 1495
- 150 to 2995
- 300 to 5993
- 600 or more1
Lowest$8,250Middle$8,600Highest$10,720
Where these facts come from
- Grades, size, affiliation, co-ed, membership, college-going: NCES Private School Universe Survey 2023-24, downloaded September 20, 2026.
- Award and rules: Idaho Parental Choice Tax Credit, official page, read October 2, 2026.
- Tuition for 5 schools: each school’s own website, last read October 6, 2026.
By city
The 17 largest
| School | Grades | Students |
|---|---|---|
| Bishop Kelly High School | 9-12 | 967 |
| St. Ignatius Catholic School | PreK-8 | 428 |
| St. Joseph's Catholic School | K-8 | 367 |
| St. Marks Elementary School | PreK-8 | 323 |
| Holy Family Catholic School | PreK-8 | 241 |
| All Saints Catholic School | PreK-8 | 216 |
| Sacred Heart Catholic School | PreK-8 | 195 |
| Immaculate Conception Academy | K-12 | 188 |
| St. Edwards Catholic School | PreK-8 | 157 |
| St. Nicholas Catholic School | PreK-6 | 118 |
| St. Marys School | PreK-8 | 109 |
| St. Mary's Parish School | PreK-8 | 84 |
| Holy Rosary Catholic School | PreK-5 | 79 |
| Sts Peter & Paul School | PreK-8 | 63 |
| Holy Spirit Catholic School | PreK-5 | 39 |
| Mary Immaculate Queen School | K-12 | 29 |
| St. Joseph Seminary | 7-12 | 12 |
Other kinds of school in Idaho
- Christian schools in Idaho
- Montessori schools in Idaho
- Private high schools in Idaho
- Private elementary schools in Idaho
- Private middle schools in Idaho
- Private schools with kindergarten in Idaho
- Private schools with pre-K in Idaho
- Lutheran schools in Idaho
- Seventh-day Adventist schools in Idaho
- All private schools in Idaho
Put the next PCTC window in your calendar
January 15, 2027 to March 15, 2027 Idaho PCTC: Application window for 2026 expenses.
Every program's dates in one calendar that updates when we confirm new dates: subscribe in Google Calendar · subscribe in Apple Calendar or Outlook · all deadlines
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