Horizons K-8 School
Public
Elementary Grades K–8 Charter
Part of Boulder Valley School District No. Re2
4545 SIOUX DRIVE, BOULDER, CO 80303 · (720) 561-5580
Community ratings
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Academic performance
Math proficiency54.5%
State average 30.5%
Reading / language arts67%
State average 47%
EDFacts via Urban Institute Education Data Portal (SY2020-21)
At a glance
358Students enrolled
14:1Student–teacher ratio
18%Free / reduced lunch
CitySetting
Alternative Education SchoolSchool type
Enrollment by grade
Kindergarten28
Grade 139
Grade 242
Grade 343
Grade 443
Grade 543
Grade 640
Grade 743
Grade 837
Students
White · 83%296
Two or more races · 8%27
Hispanic · 6%21
Asian · 2%7
Black · 1%4
American Indian/Alaska Native · 0%1
Counts as reported to NCES; percentages are of students with a reported race/ethnicity.
Enrollment · last 5 years
348’20
348’21
348’22
361’23
358’24
Location
4545 SIOUX DRIVE BOULDER
Neighbor reviews
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School facts from the U.S. Department of Education (NCES), 2024-2025 school year. Academic scores from the EDFacts via Urban Institute Education Data Portal (SY2020-21). Community ratings and reviews reflect neighbor opinions, not an official measure of school quality.