Largest Schools in Boulder (2025)
Schools with the highest enrollment. Ranked by the Success Index (US) from official American data; 24 schools in Boulder, Colorado. Rank positions shown on each profile are within United States and Colorado.
- 171Boulder High SchoolBoulder · Public HighEnrollment: 1,939
- 280Fairview High SchoolBoulder · Public HighEnrollment: 1,863
- 357Centennial Middle SchoolBoulder · Public MiddleEnrollment: 598
- 482Southern Hills Middle SchoolBoulder · Public MiddleEnrollment: 502
- 565Nevin Platt Middle SchoolBoulder · Public MiddleEnrollment: 483
- 658Manhattan Middle School of the Arts and AcademicsBoulder · Public MiddleEnrollment: 482
- 776Foothill Elementary SchoolBoulder · Public ElementaryEnrollment: 419
- 831University Hill Elementary SchoolBoulder · Public ElementaryEnrollment: 405
- 953Crest View Elementary SchoolBoulder · Public ElementaryEnrollment: 390
- 1024Columbine Elementary SchoolBoulder · Public ElementaryEnrollment: 369
- 1187Summit Middle Charter SchoolBoulder · Charter MiddleEnrollment: 366
- 1241Casey Middle SchoolBoulder · Public MiddleEnrollment: 363
- 1363Creekside Elementary School at Martin ParkBoulder · Public ElementaryEnrollment: 359
- 1465New Vista High SchoolBoulder · Public HighEnrollment: 327
- 1584Bear Creek Elementary SchoolBoulder · Public ElementaryEnrollment: 318
- 1667Douglass Elementary SchoolBoulder · Public ElementaryEnrollment: 313
- 1777Eisenhower Elementary SchoolBoulder · Public ElementaryEnrollment: 308
- 1855Community Montessori SchoolBoulder · Public ElementaryEnrollment: 277
- 1966Whittier Elementary SchoolBoulder · Public ElementaryEnrollment: 269
- 2087High Peaks Elementary SchoolBoulder · Public ElementaryEnrollment: 257
- 2176Boulder Community School/Integrated StudiesBoulder · Public ElementaryEnrollment: 255
- 2266Heatherwood Elementary SchoolBoulder · Public ElementaryEnrollment: 252
- 2379Mesa Elementary SchoolBoulder · Public ElementaryEnrollment: 250
- 2472Flatirons Elementary SchoolBoulder · Public ElementaryEnrollment: 163
| # | School | Sector | Enrollment | Success Index (US) | Key result | Students |
|---|---|---|---|---|---|---|
| 1 | Boulder High School Boulder · High · Grades 9–12 | Public | 1,939 | 70.7 Top 25% | 66% Math proficiency | 1,939 |
| 2 | Fairview High School Boulder · High · Grades 9–12 | Public | 1,863 | 80.3 Top 10% | 79% Math proficiency | 1,863 |
| 3 | Centennial Middle School Boulder · Middle · Grades 6–8 | Public | 598 | 57.2 Top 50% | 46% Math proficiency | 598 |
| 4 | Southern Hills Middle School Boulder · Middle · Grades 6–8 | Public | 502 | 81.6 Top 10% | 68% Math proficiency | 502 |
| 5 | Nevin Platt Middle School Boulder · Middle · Grades 6–8 | Public | 483 | 65.2 Top 50% | 50% Math proficiency | 483 |
| 6 | Manhattan Middle School of the Arts and Academics Boulder · Middle · Grades 6–8 | Public | 482 | 57.9 Top 50% | 42% Math proficiency | 482 |
| 7 | Foothill Elementary School Boulder · Elementary · Grades K–5 | Public | 419 | 76.1 Top 25% | 59% Math proficiency | 419 |
| 8 | University Hill Elementary School Boulder · Elementary · Grades PK–5 | Public | 405 | 31.0 Lower 50% | 27% Math proficiency | 405 |
| 9 | Crest View Elementary School Boulder · Elementary · Grades K–5 | Public | 390 | 52.9 Top 50% | 45% Math proficiency | 390 |
| 10 | Columbine Elementary School Boulder · Elementary · Grades PK–5 | Public | 369 | 24.1 Lower 50% | 23% Math proficiency | 369 |
| 11 | Summit Middle Charter School Boulder · Middle · Grades 6–8 | Charter | 366 | 86.8 Top 5% | 82% Math proficiency | 366 |
| 12 | Casey Middle School Boulder · Middle · Grades 6–8 | Public | 363 | 41.3 Lower 50% | 34% Math proficiency | 363 |
| 13 | Creekside Elementary School at Martin Park Boulder · Elementary · Grades PK–5 | Public | 359 | 62.7 Top 50% | 52% Math proficiency | 359 |
| 14 | New Vista High School Boulder · High · Grades 9–12 | Public | 327 | 65.4 Top 50% | 37% Math proficiency | 327 |
| 15 | Bear Creek Elementary School Boulder · Elementary · Grades PK–5 | Public | 318 | 84.1 Top 10% | 80% Math proficiency | 318 |
| 16 | Douglass Elementary School Boulder · Elementary · Grades PK–5 | Public | 313 | 67.0 Top 50% | 59% Math proficiency | 313 |
| 17 | Eisenhower Elementary School Boulder · Elementary · Grades PK–5 | Public | 308 | 77.4 Top 25% | 63% Math proficiency | 308 |
| 18 | Community Montessori School Boulder · Elementary · Grades PK–6 | Public | 277 | 55.3 Top 50% | 42% Math proficiency | 277 |
| 19 | Whittier Elementary School Boulder · Elementary · Grades K–5 | Public | 269 | 65.7 Top 50% | 47% Math proficiency | 269 |
| 20 | High Peaks Elementary School Boulder · Elementary · Grades K–5 | Public | 257 | 86.5 Top 5% | 82% Math proficiency | 257 |
| 21 | Boulder Community School/Integrated Studies Boulder · Elementary · Grades K–5 | Public | 255 | 76.4 Top 25% | 67% Math proficiency | 255 |
| 22 | Heatherwood Elementary School Boulder · Elementary · Grades PK–5 | Public | 252 | 66.2 Top 50% | 42% Math proficiency | 252 |
| 23 | Mesa Elementary School Boulder · Elementary · Grades PK–5 | Public | 250 | 79.3 Top 25% | 62% Math proficiency | 250 |
| 24 | Flatirons Elementary School Boulder · Elementary · Grades K–5 | Public | 163 | 71.8 Top 25% | 57% Math proficiency | 163 |
Boulder High School in Boulder leads the 2025 list of largest schools in Boulder with Enrollment 1,939. Of the 24 schools shown, 23 are public, 1 are charter.
For the full picture see the wider Colorado largest schools rankings, every school on the Boulder page, or the comparison tool to put a shortlist side by side.
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Frequently asked questions
What is the best largest school in Boulder?
Boulder High School in Boulder, Colorado ranks first among largest schools in Boulder with Enrollment 1,939 (Enrollment: 1,939).
How are largest schools in Boulder ranked?
Schools with the highest enrollment. Only schools eligible for the Success Index (US) are included; the index is shown alongside for context.
Are these 2025 rankings official?
No. They are computed by Success Tutoring from official American data (Urban Institute Education Data Portal (NCES CCD, EDFacts); NCES Common Core of Data). States set their own assessments and proficiency cut scores, so proficiency rates are most comparable within a state. Use the state rankings for like-for-like comparisons.