For the 2025-26 school year, there are 6 private high schools serving 297 students in Longmont, CO.
The top ranked private high school in Longmont, CO is Transitional School.
Top Ranked Longmont Private High Schools (2025-26)
School
Location
Quick Facts
Transitional School
Alternative School (Church of Christ)
14780 N 107th St
Longmont, CO 80504
(303) 776-6841
Longmont, CO 80504
(303) 776-6841
Gr: 6-11 | 9 students
Crossroads School![Crossroads School Photo - Crossroads 2025 graduates]( "Crossroads School Photo - Crossroads 2025 graduates")
Alternative School (Christian)
833 15th Ave.
Longmont, CO 80501
(303) 709-9881
Longmont, CO 80501
(303) 709-9881
Gr: 6-12 | 50 students Extracurrculars: 1 Tuition listed
Hillside School
Special Education School
6620 Gunpark Rd
Longmont, CO 80301
(303) 494-1468
Longmont, CO 80301
(303) 494-1468
Gr: 2-12 | 57 students Avg. class size: 4 students Tuition listed
Hopewell Baptist Academy
(Baptist)
1146 Kimbark St
Longmont, CO 80504
(303) 651-1325
Longmont, CO 80504
(303) 651-1325
Gr: K-11 | 12 students
1440 Collyer St
Longmont, CO 80501
(303) 776-3254
Longmont, CO 80501
(303) 776-3254
Gr: PK-12 | 129 students Extracurrculars: 3 Tuition listed
Sierra School Of Main Street
Special Education School
820 Main St
Longmont, CO 80501
(303) 678-5662
Longmont, CO 80501
(303) 678-5662
Gr: 1-12 | 40 students
Longmont, Colorado Private Schools (Closed)
School
Location
Quick Facts
Bright Horizons at East Longmont (Closed 2025)
Daycare / Preschool
919 Deerwood Drive
Longmont, CO 80504
(303) 772-1008
Longmont, CO 80504
(303) 772-1008
Gr: NS-PK
Bright Horizons at West Longmont (Closed 2022)
Daycare / Preschool
1011 Dry Creek Dr
Longmont, CO 80503
(303) 682-0102
Longmont, CO 80503
(303) 682-0102
Gr: NS-K
The Cottage School - Terry (Closed 2023)
Montessori School
1941 Terry St
Longmont, CO 80501
(303) 651-3780
Longmont, CO 80501
(303) 651-3780
Gr: K | 3 students
Desiderata School (Closed 2025)
Alternative School
8979 Nelson Rd.
Longmont, CO 80503
(303) 678-9335
Longmont, CO 80503
(303) 678-9335
Gr: 6-12 | 18 students Avg. class size: 10 students Tuition & acceptance rate listed
Faith Baptist School (Closed 2022)
(Baptist)
833 15th Ave
Longmont, CO 80501
(303) 776-5677
Longmont, CO 80501
(303) 776-5677
Gr: 1-12 | 129 students
Our Saviors Lutheran School (Closed 2012)
(Wisconsin Evangelical Lutheran Synod)
1219 W 17th Avenue
Longmont, CO 80501
(303) 776-1688
Longmont, CO 80501
(303) 776-1688
Gr: NS-1 | 11 students Avg. class size: 3 students Tuition listed
Frequently Asked Questions
What are the top ranked private high schools in Longmont, CO?
The top ranked private high schools in Longmont, CO is Transitional School.
How many private high schools are located in Longmont?
6 private high schools are located in Longmont.
How diverse are private high schools in Longmont?
Longmont private high schools are approximately 16% minority students, which is lower than the Colorado private school average of 25%.
What percentage of private high schools are religiously affiliated in Longmont?
Which private high schools in Longmont are often viewed compared to one another?
Popular comparisons of private high schools in Longmont include: Transitional School vs. Crossroads School
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