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Schools›Colorado›BOULDER
SCHOOL COMMUNITY·BOULDER VALLEY SCHOOL DISTRICT NO. RE2·NCES 080249006199

Horizons K-8 School

4545 SIOUX DRIVE, BOULDER, CO 80303 · (720) 561-5580 · Boulder County
GRADES KG–08ELEMENTARY12-CITYCHARTERALTERNATIVE EDUCATION SCHOOL358 STUDENTS
Enrollment
358
Elementary
DISTRICT 352 · STATE 379
Student : Teacher
14.1:1
25 FTE teachers
DISTRICT 15.7:1 · STATE 16.6:1
Free / Reduced Lunch
18%
63 students
DISTRICT 30% · STATE 50%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Kindergarten
28
Grade 1
39
Grade 2
42
Grade 3
43
Grade 4
43
Grade 5
43
Grade 6
40
Grade 7
43
Grade 8
37
Student demographics
White
29683%
DISTRICT 65% · STATE 49%
Hispanic
216%
DISTRICT 21% · STATE 37%
Black
41%
DISTRICT 1% · STATE 5%
Asian
72%
DISTRICT 6% · STATE 3%
Two+
278%
DISTRICT 7% · STATE 5%
Native American
10%
DISTRICT 0% · STATE 1%
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
17348%
Female
18351%

Discussions

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Test scores

CMAS 2024-25 . % Met or Exceeded Expectations
English Language Arts
70.7%
own-school result
Math
54.6%
own-school result
State assessment results for this school reflect a specialized student population. The figures above are the school's own reported scores; they are not directly comparable to state averages or to general-enrollment schools, so the usual state-average comparison line is suppressed here.
Source: CMAS. All students, all grades. See all years and grades →

BeatsExpectations

Not computed for this school
BeatsExpectations is not computed for specialized-population schools (schools for the deaf or blind, therapeutic and behavioral-health placements, juvenile-justice and alternative-education settings, and similar). State ELA/Math proficiency rates are not a comparable metric for these populations, so a demographically-adjusted residual against general-enrollment peers would be misleading. About the methodology →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
358
+10 (+3%) vs 2017
Student : Teacher
14.1:1
was 15.3:1
% White
83%
was 86%
% Hispanic
6%
was 7%
% Black
1%
was 0%
% Asian
2%
was 1%
Source: NCES Common Core of Data

About Horizons K-8 School

Horizons K-8 School, a moderately sized primary school in BOULDER, Colorado, run under Boulder Valley School District No. Re2, teaches 358 students, covering grades K through 8.

Boulder Valley School District No. Re2 comprises 56 schools with combined enrollment of 27,988 students; Horizons K-8 School is among them.

In terms of who attends, Horizons K-8 School records that nearly all students (83%) are White. Beyond that, the school lists 8% multiracial, 6% Hispanic.

Looking at school resources, On paper, Horizons K-8 School has 25 full-time-equivalent teachers, translating to a class-load average of around 14.1:1. The state averages around 16.6:1, so this campus is tighter than the state norm typical. Around 18% of the student body qualifies for free or reduced-price meals, which schools and policymakers use as a rough income-mix signal. Set against Boulder County (around 33%), the school's rate is somewhat below typical.

Zooming out to the county, ACS estimates for Boulder County put the typical household earns roughly $103,994 per year, about 64% of the adult population holds a bachelor's degree or above, and census figures put the poverty rate at about 4%. Horizons K-8 School is one of 86 public schools in Boulder County (combined enrollment of about 42,200 students).

The closest other public school is Manhattan Middle School of the Arts and Academics, roughly 0.5 miles away. Counting just inside five miles, 8 other public schools cluster around Horizons K-8 School.

Geographically, the school is in a high-density area. Horizons K-8 School is a charter school, which puts it inside the public-school system but outside the standard district-managed model.

Five-year trend. Looking back 7 years, enrollment at Horizons K-8 School has rose 3%, going from 348 students in 2018 to 358 in 2025. Class-load math has fell: from 15.3:1 in 2018 to 14.1:1 in 2025.

In the discussion threads here, posts here usually surface around enrollment questions, classroom assignments, and PTA news. Members of the school community can share what they know.

Boulder County at a glance

View full county profile
Population
328,961
Census ACS
Median income
$103,994
Household, ACS
Bachelor's+
64%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
86
42,200 students

Quick facts

School name
Horizons K-8 School
District
Boulder Valley School District No. Re2
Address
4545 SIOUX DRIVE, BOULDER, CO 80303
Phone
(720) 561-5580
County
Boulder County
Level
Elementary
Grade range
KG–08
Total enrollment
358
Teachers (FTE)
25
Student–teacher ratio
14.1:1
Free/Reduced lunch
63 (18%)
Locale
12-City: Mid-size
NCES ID
080249006199
Charter school
Yes
Virtual school
No

Related schools

Other schools in Boulder Valley School District No. Re2
Other schools in BOULDER
Nearby schools

Frequently asked questions

About Horizons K-8 School
What is the total enrollment at Horizons K-8 School?
Horizons K-8 School enrolls approximately 358 students in grades KG-08.
What grades does Horizons K-8 School serve?
Horizons K-8 School serves grades KG-08.
How many teachers does Horizons K-8 School have?
Horizons K-8 School employs 25 FTE teachers, for a student-to-teacher ratio of 14.1:1.
What is the student diversity at Horizons K-8 School?
Student demographics at Horizons K-8 School are roughly 83% White, 6% Hispanic, 1% Black, 2% Asian, 8% Two or more.
Who oversees Horizons K-8 School?
Horizons K-8 School is overseen by Boulder Valley School District No. Re2 in Boulder County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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