The average private high school in Idaho was founded around 1980 (2025).
The oldest private high school in Idaho is Northwest Childrens Home Education Center, founded in 1905.
Year Founded Range: 1905
2021
Avg. Year Founded: 1980
Oldest Private High Schools in Idaho (2025)
School
Founding Date
Grades
Location
Rank: #11.
Northwest Childrens Home Education Center
Special Education School
Founding Date: 1905
Grades: 1-12
602 13th St
Lewiston, ID 83501
(208) 746-8206
Lewiston, ID 83501
(208) 746-8206
Rank: #22.
Greenleaf Friends Academy![Greenleaf Friends Academy Photo - .......a place to belong and be known]( "Greenleaf Friends Academy Photo - .......a place to belong and be known")
(Friends)
Founding Date: 1908
Grades: PK-12
20565 Academy Rd
Greenleaf, ID 83626
(208) 459-6346
Greenleaf, ID 83626
(208) 459-6346
Rank: #3 - 43. - 4.
Beacon Christian School
(Seventh Day Adventist)
Founding Date: 1918
Grades: K-10
615 Stewart Ave
Lewiston, ID 83501
(208) 743-8361
Lewiston, ID 83501
(208) 743-8361
Rank: #3 - 43. - 4.
Gem State Adventist Academy
(Seventh Day Adventist)
Founding Date: 1918
Grades: 9-12
16115 S Montana Ave
Caldwell, ID 83607
(208) 459-1627
Caldwell, ID 83607
(208) 459-1627
Rank: #55.
Nampa Christian Schools![Nampa Christian Schools Photo - The class of 2016 celebrates commencement. 100% of these students when onto higher education. They have blessed our school beyond measure and will be missed.]( "Nampa Christian Schools Photo - The class of 2016 celebrates commencement. 100% of these students when onto higher education. They have blessed our school beyond measure and will be missed.")
(Christian)
Founding Date: 1959
Grades: NS-12
11920 W. Flamingo Avenue
Nampa, ID 83651
(208) 475-1697
Nampa, ID 83651
(208) 475-1697
Rank: #66.
Bishop Kelly High School![Bishop Kelly High School Photo]( "Bishop Kelly High School Photo")
(Catholic)
Founding Date: 1964
Grades: 9-12
7009 Franklin Rd
Boise, ID 83709
(208) 375-6010
Boise, ID 83709
(208) 375-6010
Rank: #7 - 87. - 8.
Founding Date: 1972
Grades: NS-12
200 E Carlton Ave
Meridian, ID 83642
(208) 947-1212
Meridian, ID 83642
(208) 947-1212
Rank: #7 - 87. - 8.
Cole Valley Christian School
(Christian)
Founding Date: 1972
Grades: 7-12
8775 W Ustick Rd
Boise, ID 83704
(208) 947-1212
Boise, ID 83704
(208) 947-1212
Rank: #99.
Founding Date: 1973
Grades: PK-12
Po Box 2118
Sun Valley, ID 83353
(208) 622-3960
Sun Valley, ID 83353
(208) 622-3960
Rank: #1010.
Twin Falls Christian Academy
(Baptist)
Founding Date: 1975
Grades: NS-12
798 Eastland Drive N
Twin Falls, ID 83301
(208) 733-1452
Twin Falls, ID 83301
(208) 733-1452
Rank: #1111.
Clear Lakes Christian Academy![Clear Lakes Christian Academy Photo - Clear Lakes Christian Academy has provided quality Christian education since 1978 to the Magic Valley area.]( "Clear Lakes Christian Academy Photo - Clear Lakes Christian Academy has provided quality Christian education since 1978 to the Magic Valley area.")
(Baptist)
Founding Date: 1978
Grades: K-12
440 Clear Lakes Rd
Buhl, ID 83316
(208) 543-8481
Buhl, ID 83316
(208) 543-8481
Rank: #1212.
Founding Date: 1979
Grades: PK-12
3639 W Prairie Ave
Hayden, ID 83835
(208) 772-7542
Hayden, ID 83835
(208) 772-7542
Rank: #1313.
Founding Date: 1980
Grades: PK-12
754 Silver Birch Ln
Oldtown, ID 83822
(208) 437-2184
Oldtown, ID 83822
(208) 437-2184
Rank: #14 - 1514. - 15.
Logos School![Logos School Photo]( "Logos School Photo")
(Christian)
Founding Date: 1981
Grades: PK-12
110 Baker St
Moscow, ID 83843
(208) 882-1226
Moscow, ID 83843
(208) 882-1226
Rank: #14 - 1514. - 15.
North Idaho Christian School![North Idaho Christian School Photo - Girls Varsity Basketball Champions 2024]( "North Idaho Christian School Photo - Girls Varsity Basketball Champions 2024")
Alternative School
Founding Date: 1981
Grades: K-12
251 W Miles Ave
Hayden, ID 83835
(208) 772-7546
Hayden, ID 83835
(208) 772-7546
Rank: #1616.
Silver Valley Christian Academy
(Christian)
Founding Date: 1985
Grades: PK-12
514 West Brown Avenue
Kellogg, ID 83837
(208) 783-3791
Kellogg, ID 83837
(208) 783-3791
Rank: #17 - 1817. - 18.
Centennial Baptist School
(Christian)
Founding Date: 1991
Grades: NS-12
3610 E. Ustick Rd
Caldwell, ID 83605
(208) 454-1997
Caldwell, ID 83605
(208) 454-1997
Rank: #17 - 1817. - 18.
Project Patch School![Project Patch School Photo]( "Project Patch School Photo")
Alternative School (Christian)
Founding Date: 1991
Grades: 6-12
PO BOX 450
Garden Valley, ID 83622
(360) 690-8495
Garden Valley, ID 83622
(360) 690-8495
Rank: #1919.
Foothills School of Arts & Sciences![Foothills School of Arts & Sciences Photo - Foothills students become capable and confident learners during their time at Foothills! Foothills allows students to share their voice, empowers them to become critical thinkers and open-minded listeners, and promotes a positive school culture where everyone is valued.]( "Foothills School of Arts & Sciences Photo - Foothills students become capable and confident learners during their time at Foothills! Foothills allows students to share their voice, empowers them to become critical thinkers and open-minded listeners, and promotes a positive school culture where everyone is valued.")
Special Program Emphasis
Founding Date: 1992
Grades: PK-9
601 South 9th Street
Boise, ID 83702
(208) 331-9260
Boise, ID 83702
(208) 331-9260
Rank: #2020.
Calvary Christian School![Calvary Christian School Photo - Coach giving direction]( "Calvary Christian School Photo - Coach giving direction")
(Christian)
Founding Date: 1994
Grades: K-11
1210 N Middleton Rd
Nampa, ID 83651
(208) 467-9114
Nampa, ID 83651
(208) 467-9114
Rank: #21 - 2321. - 23.
Founding Date: 1995
Grades: PK-12
6100 N. Locust Grove Rd.
Meridian, ID 83646
(208) 323-3888
Meridian, ID 83646
(208) 323-3888
Rank: #21 - 2321. - 23.
Classical Christian Academy![Classical Christian Academy Photo - Classical Christian Academy students on the 1st day of school.]( "Classical Christian Academy Photo - Classical Christian Academy students on the 1st day of school.")
Special Program Emphasis (Christian)
Founding Date: 1995
Grades: PK-12
4810 N. Ramsey Road
Coeur D Alene, ID 83815
(208) 777-4400
Coeur D Alene, ID 83815
(208) 777-4400
Rank: #21 - 2321. - 23.
Lighthouse Christian School
(Christian)
Founding Date: 1995
Grades: PK-12
960 Eastland Dr
Twin Falls, ID 83301
(208) 737-1425
Twin Falls, ID 83301
(208) 737-1425
Rank: #2424.
The North Fork School![The North Fork School Photo - Hard work. Hard statistics. Open doors.]( "The North Fork School Photo - Hard work. Hard statistics. Open doors.")
Special Program Emphasis
Founding Date: 1996
Grades: 5-11
812 Reedy Lane
Mccall, ID 83638
(208) 634-4024
Mccall, ID 83638
(208) 634-4024
Rank: #25 - 2725. - 27.
Founding Date: 1997
Grades: PK-12
5521 E Warm Springs Ave
Boise, ID 83716
(208) 424-5000
Boise, ID 83716
(208) 424-5000
Rank: #25 - 2725. - 27.
St. John Bosco Academy
(Catholic)
Founding Date: 1997
Grades: PK-12
122 Substation Rd
Cottonwood, ID 83522
(208) 962-5650
Cottonwood, ID 83522
(208) 962-5650
Rank: #25 - 2725. - 27.
Watersprings School![Watersprings School Photo - One of our 3rd Grade Classes]( "Watersprings School Photo - One of our 3rd Grade Classes")
(Christian)
Founding Date: 1997
Grades: PK-12
4250 South 25th East
Idaho Falls, ID 83404
(208) 542-6250
Idaho Falls, ID 83404
(208) 542-6250
Rank: #2828.
Wisdom Ranch Vocational Gap Year
All-boys | Alternative School
Founding Date: 2001
Grades: 10-12
4331 Champagne Creek Rd
Arco, ID 83213
(208) 527-8933
Arco, ID 83213
(208) 527-8933
Rank: #2929.
Founding Date: 2005
Grades: PK-12
1866 N Cecil Rd Bldg 2
Post Falls, ID 83854
(208) 691-0712
Post Falls, ID 83854
(208) 691-0712
Rank: #3030.
The Sage School
Alternative School
Founding Date: 2009
Grades: 6-12
1451 Aviation Dr
Hailey, ID 83333
(208) 788-0120
Hailey, ID 83333
(208) 788-0120
Rank: #3131.
Founding Date: 2010
Grades: 6-9
3770 E Black Canyon Hwy
Emmett, ID 83617
(208) 365-3437
Emmett, ID 83617
(208) 365-3437
Rank: #3232.
Founding Date: 2016
Grades: PK-12
5771 N Discovery Way
Boise, ID 83713
(208) 991-4376
Boise, ID 83713
(208) 991-4376
Rank: #3333.
Acton Academy Twin Falls![Acton Academy Twin Falls Photo]( "Acton Academy Twin Falls Photo")
Montessori School
Founding Date: 2021
Grades: NS-10
1830 Addison Ave E
Twin Falls, ID 83301
(208) 420-9520
Twin Falls, ID 83301
(208) 420-9520
Frequently Asked Questions
What is the Idaho average private high schools founding year?
The Idaho average private high schools founding year is 1980 for 2025.
What are the private high schools with oldest founding year in Idaho?
The top ranked private high schools in Idaho include Northwest Childrens Home Education Center, Greenleaf Friends Academy and Beacon Christian School.
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