Excellent
#158 of 1,815 schools in CO
Top 9% in state
Horizons K-8 School
Elementary School · Boulder Valley School District No. Re2
4545 SIOUX DRIVE, Boulder, CO 80303
Enrollment
361
Student-Teacher
15:1
Score
8.5
Grades
Kindergarten – 8th
Enrollment
361
Student-Teacher
15:1
Score
8.5
Grades
Kindergarten – 8th
Data vintage
2022-23
Data vintage2022-23
How this school compares
Colorado schools
#158 of 1,815
In Boulder
#11 of 29
public schools
In district
#17 of 54
Boulder Valley School District No. Re2
School environment
9.2 / 10
Excellent
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Horizons K-8 School
Elementary School in Boulder · grades Kindergarten – 8th. Start here, then compare fit against nearby and district options.
Manhattan Middle School of the Arts and Academics
0.5 mi away. Use as a geographic alternative in the same move search.
Bixby School
0.7 mi away. Use as a geographic alternative in the same move search.
About Horizons K-8 School
Horizons K-8 School is a public elementary school in Boulder, CO, part of Boulder Valley School District No. Re2. Horizons K-8 School serves approximately 361 students, and covers grades Kindergarten-8th, and has a 15:1 student-teacher ratio.
Horizons K-8 School has a current MySchoolScout rating of 8.5 out of 10 and ranks #158 of 1,815 schools in CO. Structured state assessment records for Horizons K-8 School show 63% math proficiency (multi-year average, 2009-2025) and 76% reading/ELA proficiency (multi-year average, 2009-2025).
- This school 8.5 · Excellent
- District avg 8.1
- CO avg 6.3
What Parents Should Know
Horizons K-8 School is a charter school: publicly funded, but run with more independence than a traditional district school. Many charters are built around a specific model or focus, so it's worth understanding this one's mission, how enrollment works, and how it differs from the district schools nearby.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Horizons K-8 School — Students at Horizons K-8 School score 63% proficient, which is above what's typical for similar communities (expected: 56%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
13%
Students qualifying for federal meal assistance
Test Scores CO CMAS (2024-25)
Based on 41 test records from CO state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 8.0/10.
How Horizons K-8 School Compares
See how Horizons K-8 School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
4545 SIOUX DRIVE, Boulder, CO 80303
Nearby Alternatives
Families considering Horizons K-8 School may also want to explore other elementary schools in the area. Creekside Elementary School at Martin Park (rated 9.3/10, 0.7 miles away), which scores slightly higher. Another option is High Peaks Elementary School (rated 9.2/10, 0.8 miles away), which scores slightly higher. Additionally, Eisenhower Elementary School (rated 9.1/10, 1.0 miles away), which scores slightly higher. For more schools in Boulder, see our Boulder schools guide .
Nearby Schools
20 within 2.5 mi| School | Distance | Rating |
|---|---|---|
| Manhattan Middle School of the Arts and Academics Boulder | 0.5 mi | 8.3 |
| BIXBY SCHOOL Boulder | 0.7 mi | 6.3 |
| Summit Middle Charter School Boulder | 0.7 mi | 9.5 |
| High Peaks Elementary School Boulder | 0.8 mi | 9.2 |
| Boulder Community School/Integrated Studies Boulder | 0.8 mi | 7.8 |
| Creekside Elementary School at Martin Park Boulder | 0.7 mi | 9.3 |
| COUNTRYSIDE MONTESSORI SCHOOL Boulder | 0.8 mi | — |
| Eisenhower Elementary School Boulder | 1.0 mi | 9.1 |
| Community Montessori School Boulder | 1.1 mi | 7.2 |
| Southern Hills Middle School Boulder | 1.4 mi | 8.8 |
| Fairview High School Boulder | 1.5 mi | 8.6 |
| Bear Creek Elementary School Boulder | 1.6 mi | 9.1 |
| Nevin Platt Middle School Boulder | 1.6 mi | 7.6 |
| New Vista High School Boulder | 1.7 mi | 7.9 |
| Mesa Elementary School Boulder | 1.9 mi | 9.1 |
| JAY & ROSE PHILLIPS EARLY CHILDHOOD CENTER Boulder | 2.0 mi | — |
| University Hill Elementary School Boulder | 2.0 mi | 7.6 |
| Boulder High School Boulder | 2.4 mi | 8.3 |
| Whittier Elementary School Boulder | 2.6 mi | 7.0 |
| Arapahoe Ridge High School Boulder | 2.5 mi | 6.4 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 80303 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$77,344
Median Home Value
$941,600
Median Rent
$1,833/mo
Population
24,934
College Educated
78.9%
Homeownership
45.5%
Avg Commute
19.1 min
Poverty Rate
23.6%
Median Age
29.8
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Bromwell Elementary School Denver, CO | 8.5 |
| Crested Butte Elementary School Crested Butte, CO | 8.5 |
| Denver Center for International Studies at Fairmon Denver, CO | 8.5 |
| Kohl Elementary School Broomfield, CO | 8.5 |
| Kruse Elementary School Fort Collins, CO | 8.5 |
| Mitchell Elementary School Golden, CO | 8.5 |
Frequently Asked Questions
Common questions about Horizons K-8 School
What grades does Horizons K-8 School serve?
Horizons K-8 School serves students in grades Kindergarten through 8th.
How many students attend Horizons K-8 School?
Horizons K-8 School has an enrollment of approximately 361 students.
What is the student-teacher ratio at Horizons K-8 School?
The student-teacher ratio at Horizons K-8 School is 15:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Horizons K-8 School rank in CO?
Horizons K-8 School ranks #158 of 1,815 schools in CO.
What is Horizons K-8 School's MySchoolScout rating?
Horizons K-8 School has a current MySchoolScout rating of 8.5 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Horizons K-8 School?
Based on loaded state assessment records, Horizons K-8 School has 63% math proficiency (multi-year average, 2009-2025) and 76% reading/ELA proficiency (multi-year average, 2009-2025).
Is Horizons K-8 School a charter school?
Yes, Horizons K-8 School is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.
Is Horizons K-8 School a Title I school?
No, Horizons K-8 School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Horizons K-8 School?
13.0% of students at Horizons K-8 School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 8th
- Enrollment
- 361
- Student-Teacher Ratio
- 15:1
- Teachers (FTE)
- 24
- Free/Reduced Lunch
- 13.0%
- Type
- alternative
- Setting
- Midsize City
- County
- Boulder County
- Chronic Absenteeism (SY 2022-23)
- 18.3%
- Phone
- (720) 561-5580
Resources & Links
District
Boulder Valley School District No. Re2- District Enrollment
- 28,357
- Schools in District
- 56
- Per-Pupil Spending
- $17,172
- District Rank
- #17 of 54
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