For the 2025 school year, there are 30 public middle schools serving 16,588 students in Boulder County, CO. The top ranked public middle schools in Boulder County, CO are Summit Middle Charter School, Southern Hills Middle School and Eldorado K-8 School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Boulder County, CO public middle schools have an average math proficiency score of 44% (versus the Colorado public middle school average of 29%), and reading proficiency score of 57% (versus the 43% statewide average). Middle schools in Boulder County have an average ranking of 10/10, which is in the top 10% of Colorado public middle schools.
Minority enrollment is 33% of the student body (majority Hispanic), which is less than the Colorado public middle school average of 50% (majority Hispanic).
Best Public Middle Schools in Boulder County (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
Summit Middle Charter School
Charter School
(Math: 82% | Reading: 91%)
Rank:
Rank:
10/
Top 1%10
4655 Hanover Avenue
Boulder, CO 80305
(720) 561-3900
Boulder, CO 80305
(720) 561-3900
Grades: 6-8
| 361 students
Rank: #22.
Southern Hills Middle School
(Math: 64% | Reading: 83%)
Rank:
Rank:
10/
Top 5%10
1500 Knox Drive
Boulder, CO 80305
(720) 561-3400
Boulder, CO 80305
(720) 561-3400
Grades: 6-8
| 493 students
Rank: #33.
Eldorado K-8 School
(Math: 59% | Reading: 70%)
Rank:
Rank:
10/
Top 10%10
3351 South Indiana Street
Louisville, CO 80027
(720) 561-4400
Louisville, CO 80027
(720) 561-4400
Grades: PK-8
| 559 students
Rank: #44.
Meadowlark School
(Math: 54% | Reading: 69%)
Rank:
Rank:
10/
Top 10%10
2300 Sweet Meadow Lane
Erie, CO 80516
(720) 561-5104
Erie, CO 80516
(720) 561-5104
Grades: PK-8
| 754 students
Rank: #55.
Peak To Peak Charter School
Charter School
(Math: 55% | Reading: 67%)
Rank:
Rank:
10/
Top 10%10
800 Merlin Drive
Lafayette, CO 80026
(303) 453-4600
Lafayette, CO 80026
(303) 453-4600
Grades: K-12
| 1,452 students
Rank: #66.
Altona Middle School
(Math: 55% | Reading: 65%)
Rank:
Rank:
9/
Top 20%10
4600 Clover Basin Drive
Longmont, CO 80503
(720) 494-3980
Longmont, CO 80503
(720) 494-3980
Grades: 6-8
| 741 students
Rank: #77.
Horizons K-8 School
Alternative School
Charter School
Charter School
(Math: 52% | Reading: 65%)
Rank:
Rank:
9/
Top 20%10
4545 Sioux Drive
Boulder, CO 80303
(720) 561-5580
Boulder, CO 80303
(720) 561-5580
Grades: K-8
| 361 students
Rank: #88.
Monarch K-8 School
(Math: 52% | Reading: 64%)
Rank:
Rank:
9/
Top 20%10
263 Campus Drive
Louisville, CO 80027
(720) 561-4000
Louisville, CO 80027
(720) 561-4000
Grades: PK-8
| 738 students
Rank: #99.
Apex Home School Enrichment Program
(Math: 40-59% | Reading: 60-79% )
Rank:
Rank:
9/
Top 20%10
1351 S. Sunset St Unit B
Longmont, CO 80501
(303) 702-8600
Longmont, CO 80501
(303) 702-8600
Grades: K-12
| 717 students
Rank: #1010.
Louisville Middle School
(Math: 50% | Reading: 63%)
Rank:
Rank:
9/
Top 20%10
1341 Main Street
Louisville, CO 80027
(720) 561-7400
Louisville, CO 80027
(720) 561-7400
Grades: 6-8
| 610 students
Rank: #1111.
Lyons Middle/senior High School
(Math: 40-44% | Reading: 70-74%)
Rank:
Rank:
9/
Top 20%10
100 Mcconnell Drive
Lyons, CO 80540
(303) 823-6631
Lyons, CO 80540
(303) 823-6631
Grades: 6-12
| 352 students
Rank: #1212.
Boulder Universal
(Math: 30-39% | Reading: 70-79%)
Rank:
Rank:
8/
Top 30%10
6500 East Arapahoe Road
Boulder, CO 80303
(720) 561-6253
Boulder, CO 80303
(720) 561-6253
Grades: K-12
| 226 students
Rank: #1313.
Westview Middle School
(Math: 45% | Reading: 58%)
Rank:
Rank:
8/
Top 30%10
1651 Airport Road
Longmont, CO 80503
(303) 772-3134
Longmont, CO 80503
(303) 772-3134
Grades: 6-8
| 621 students
Rank: #1414.
Flagstaff Charter Academy
Charter School
(Math: 46% | Reading: 57%)
Rank:
Rank:
8/
Top 30%10
2040 Miller Drive
Longmont, CO 80501
(303) 651-7900
Longmont, CO 80501
(303) 651-7900
Grades: PK-8
| 775 students
Rank: #1515.
Aspen Ridge Preparatory School
Charter School
(Math: 48% | Reading: 52%)
Rank:
Rank:
8/
Top 30%10
705 Austin Avenue
Erie, CO 80516
(720) 242-6225
Erie, CO 80516
(720) 242-6225
Grades: K-8
| 548 students
Rank: #1616.
Twin Peaks Charter Academy
Charter School
(Math: 44% | Reading: 56%)
Rank:
Rank:
8/
Top 30%10
340 South Sunset Street
Longmont, CO 80501
(303) 772-7286
Longmont, CO 80501
(303) 772-7286
Grades: K-12
| 852 students
Rank: #1717.
Manhattan Middle School Of The Arts And Academics
(Math: 40% | Reading: 58%)
Rank:
Rank:
8/
Top 30%10
290 Manhattan Drive
Boulder, CO 80303
(720) 561-6300
Boulder, CO 80303
(720) 561-6300
Grades: 6-8
| 418 students
Rank: #1818.
Justice High Charter School
Alternative School
Charter School
Charter School
(Math: <50% | Reading: <50%)
Rank:
Rank:
8/
Top 30%10
805 Excalibur
Lafayette, CO 80026
(720) 935-1337
Lafayette, CO 80026
(720) 935-1337
Grades: 6-12
| 103 students
Rank: #1919.
Soaring Heights Pk-8
(Math: 42% | Reading: 56%)
Rank:
Rank:
8/
Top 30%10
3280 County Road 5
Erie, CO 80516
(303) 702-8020
Erie, CO 80516
(303) 702-8020
Grades: PK-8
| 1,254 students
Rank: #2020.
Nevin Platt Middle School
(Math: 40% | Reading: 53%)
Rank:
Rank:
7/
Top 50%10
6096 Baseline Road
Boulder, CO 80303
(720) 561-5536
Boulder, CO 80303
(720) 561-5536
Grades: 6-8
| 503 students
Rank: #2121.
Nederland Middle-senior High School
(Math: 30-34% | Reading: 55-59%)
Rank:
Rank:
7/
Top 50%10
597 Eldora Road
Nederland, CO 80466
(720) 561-4900
Nederland, CO 80466
(720) 561-4900
Grades: 6-12
| 245 students
Rank: #2222.
Erie Middle School
(Math: 42% | Reading: 48%)
Rank:
Rank:
7/
Top 50%10
650 Main Street
Erie, CO 80516
(303) 828-3391
Erie, CO 80516
(303) 828-3391
Grades: 6-8
| 742 students
Rank: #2323.
Centennial Middle School
(Math: 34% | Reading: 52%)
Rank:
Rank:
7/
Top 50%10
2205 Norwood Avenue
Boulder, CO 80304
(720) 561-5441
Boulder, CO 80304
(720) 561-5441
Grades: 6-8
| 619 students
Rank: #2424.
St. Vrain Community Montessori School
Charter School
(Math: 21-39% | Reading: 40-59%)
Rank:
Rank:
6/
Top 50%10
1055 Delaware Ave.
Longmont, CO 80501
(303) 682-4339
Longmont, CO 80501
(303) 682-4339
Grades: PK-8
| 267 students
Rank: #2525.
Angevine Middle School
(Math: 28% | Reading: 41%)
Rank:
Rank:
5/
Bottom 50%10
1150 W South Boulder Road
Lafayette, CO 80026
(720) 561-7100
Lafayette, CO 80026
(720) 561-7100
Grades: 6-8
| 609 students
Rank: #2626.
Casey Middle School
(Math: 26% | Reading: 44%)
Rank:
Rank:
5/
Bottom 50%10
1301 High Street
Boulder, CO 80304
(720) 561-2700
Boulder, CO 80304
(720) 561-2700
Grades: 6-8
| 393 students
Rank: #2727.
St. Vrain Launched Virtual Academy
(Math: 20-24% | Reading: 30-34%)
Rank:
Rank:
4/
Bottom 50%10
395 S. Pratt Parkway
Longmont, CO 80501
(303) 702-8800
Longmont, CO 80501
(303) 702-8800
Grades: K-12
| 329 students
Rank: #2828.
Sunset Middle School
(Math: 18% | Reading: 32%)
Rank:
Rank:
4/
Bottom 50%10
1300 S. Sunset
Longmont, CO 80501
(303) 776-3963
Longmont, CO 80501
(303) 776-3963
Grades: 6-8
| 341 students
Rank: #2929.
Longs Peak Middle School
(Math: 7% | Reading: 17%)
Rank:
Rank:
1/
Bottom 50%10
1500 14th Avenue
Longmont, CO 80501
(303) 776-5611
Longmont, CO 80501
(303) 776-5611
Grades: 5-8
| 382 students
Rank: n/an/a
1942 Broadway Street Ste 314c
Boulder, CO 80302
(303) 345-4145
Boulder, CO 80302
(303) 345-4145
Grades: 6-12
| 223 students
Boulder County Public Schools (Closed)
School
Location
Grades
Students
Adult Educationlincoln Center (Closed 2014)
Alternative School
820 Main St
Longmont, CO 80501
(303) 678-5662
Longmont, CO 80501
(303) 678-5662
Grades: 6-12
| 122 students
700 20th Street
Boulder, CO 80302
(303) 443-1062
Boulder, CO 80302
(303) 443-1062
Grades: 6-8
| 416 students
7690 East Baseline Rd
Boulder, CO 80303
(720) 561-5500
Boulder, CO 80303
(720) 561-5500
Grades: K-12
| 11 students
Halcyon School (Special Education) (Closed 2023)
Special Education School
3100 Bucknell Court
Boulder, CO 80303
(720) 561-4700
Boulder, CO 80303
(720) 561-4700
Grades: 6-12
| 13 students
233 East Mountain View
Longmont, CO 80501
(303) 772-7900
Longmont, CO 80501
(303) 772-7900
Grades: 6-8
| 414 students
333 East Mountain View
Longmont, CO 80501
(303) 772-4280
Longmont, CO 80501
(303) 772-4280
Grades: PK-5
| 380 students
840 Mapleton Avenue
Boulder, CO 80304
(303) 442-6962
Boulder, CO 80304
(303) 442-6962
Grades: K-5
| 128 students
1200 South Sunset Street
Longmont, CO 80501
(720) 494-3975
Longmont, CO 80501
(720) 494-3975
Grades: 9-12
| n/a students
1200 South Sunset Street
Longmont, CO 80501
(720) 494-3969
Longmont, CO 80501
(720) 494-3969
Grades: 9-12
| 50 students
Sojourner Charter School (Closed 2004)
Charter School
3050 34th Street
Boulder, CO 80301
(303) 494-9210
Boulder, CO 80301
(303) 494-9210
Grades: 6-8
| 34 students
1440 Collyer St
Longmont, CO 80501
(720) 494-3761
Longmont, CO 80501
(720) 494-3761
Grades: PK-5
| 320 students
Ute Creek Secondary Charter Academy (Closed 2008)
Charter School
1198 Boston Avenue
Longmont, CO 80501
(303) 774-0066
Longmont, CO 80501
(303) 774-0066
Grades: 9-12
| 169 students
1215 Cedar Avenue
Boulder, CO 80304
(303) 449-6618
Boulder, CO 80304
(303) 449-6618
Grades: K-5
| 285 students
Frequently Asked Questions
What are the top ranked public middle schools in Boulder County, CO?
The top ranked public middle schools in Boulder County, CO include Summit Middle Charter School, Southern Hills Middle School and Eldorado K-8 School. Boulder County has one of the highest concentrations of top ranked public schools in Colorado.
How many public middle schools are located in Boulderunty?
30 public middle schools are located in Boulderunty.
What is the racial composition of students in Boulderunty?
Boulderunty public middle schools minority enrollment is 33% of the student body (majority Hispanic), which is less than the Colorado public middle schools average of 50% (majority Hispanic).
Which public middle schools in Boulderunty are often viewed compared to one another?
Popular comparisons of public middle schools in Boulderunty include: Southern Hills Middle School vs. Summit Middle Charter School, Westview Middle School vs. Altona Middle School, Altona Middle School vs. Westview Middle School
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