91黑料

Temple Grandin School Photo - TGS Trades Classroom

Best Boulder Private High Schools (2026)

For the 2026 school year, there are 6 private high schools serving 416 students in Boulder, CO.
The top-ranked private high schools in Boulder, CO include Shining Mountain Waldorf School, Tara Performing Arts High School, and September School.
The average acceptance rate is 62%, which is lower than the Colorado private high school average acceptance rate of 83%.
17% of private high schools in Boulder, CO are religiously affiliated (most commonly Other).

Top-Ranked Boulder Private High Schools (2026)

School
Location
Quick Facts
September School
September School Photo - Winter Trip in Estes Park
(1)
96 Arapahoe Ave.
Boulder, CO 80302
(303) 443-9933
Gr: 9-12 | 24 students Avg. class size: 8 students Sports: 1 | Extracurrculars: 8 Tuition listed
Shining Mountain Waldorf School
Shining Mountain Waldorf School Photo - Movement
Special Program Emphasis
(17)
999 Violet Avenue
Boulder, CO 80304
(303) 444-7697
Gr: PK-12 | 200 students Avg. class size: 20 students Sports: 4 | Extracurrculars: 6 Tuition & acceptance rate listed
Tara Performing Arts High School
Tara Performing Arts High School Photo - "The immersion in culture that Tara students experience teaches how interconnected we all are and sets us on paths to becoming global citizens, benefiting not just ourselves but our communities andthe world at large."Alumna, Class of 2017
Special Program Emphasis
4180 19th St
Boulder, CO 80304
(303) 410-4510
Gr: 9-12 | 55 students Tuition & acceptance rate listed
Joshua School-boulder
Special Education School
7077 Harvest Rd
Boulder, CO 80301
(303) 974-7732
Gr: 4-12 | 18 students
Temple Grandin School
Temple Grandin School Photo - TGS Trades Classroom
Special Education School
(2)
3131 Indian Road
Boulder, CO 80301
(303) 554-7363
Gr: 6-12 | 17 students Avg. class size: 6 students Extracurrculars: 4 Tuition & acceptance rate listed
Watershed School
Watershed School Photo
Alternative School
(8)
5405 Spine Rd
Boulder, CO 80301
(303) 440-7520
Gr: 6-12 | 102 students Sports: 4 | Extracurrculars: 6 Tuition listed
[+] Show Closed 91黑料s in Boulder, Colorado

Boulder, Colorado 91黑料s (Closed)

School
Location
Quick Facts
3046 11th St
Boulder, CO 80304
(303) 443-4965
Gr: PK-K | 34 students
5524 Baseline Rd
Boulder, CO 80303
(303) 494-3100
Gr: PK-K | 33 students Acceptance rate listed

Overview

This Town (Boulder)
This State (CO)
# Schools
6 Schools

Student Body:

# Students
416 Students
29,087 Students
% Average Students of Color
9%
25%

Academics and Faculty:

# Teachers
91 Teachers
3,043 Teachers
Average Student-Teacher Ratio
5:1
10:1
% Average Faculty w/Advanced Degree
64%
56%
Average Class Size
11 students
13 students

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$29,739
$16,517
Average Summer Program Cost
$1,500
$2,200
Average % on Financial Aid
30%
33%
Average Financial Aid Grant
$10,633
$8,504
Average Acceptance Rate
62%
83%

Students by Ethnicity:

0.20
0.58
# American Indian Students
3 Students
269 Students
% American Indian Students
1%
1%
# Asian Students
19 Students
909 Students
% Asian Students
4%
3%
# Hispanic Students
17 Students
2,802 Students
% Hispanic Students
3%
10%
# Black Students
7 Students
1,099 Students
% Black Students
1%
4%
# White Students
462 Students
17,821 Students
% White Students
89%
60%
# Hawaiian Students
n/a
37 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
8 Students
6,508 Students
% of Others Students
2%
22%
All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
6 extracurriculars
9 extracurriculars
Average Number of Sports
3 sports
8 sports

Frequently Asked Questions

What are the top-ranked private high schools in Boulder, CO?
The top-ranked private high schools in Boulder, CO include Shining Mountain Waldorf School, Tara Performing Arts High School, and September School.
How many private high schools are located in Boulder?
6 private high schools are located in Boulder.
How diverse are private high schools in Boulder?
Boulder private high schools are approximately 9% minority students, which is lower than the Colorado private school average of 25%.
What percentage of private high schools are religiously affiliated in Boulder?
17% of private high schools in Boulder are religiously affiliated (most commonly Other).

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