Horizons K-8 School

Grades K–8 Public charter Alternative District: Boulder Valley School District No. Re2

4545 Sioux Drive, Boulder, CO 80303 Map

Math (met standard)
60%
+23 state 38% · 2025-26
English (met standard)
68%
+24 state 45% · 2025-26
Science (met standard)
63%
+27 state 36% · 2025-26
Low income
18%
free or reduced-price lunch
Special education
14%
students with an IEP · 2023-24
Students
358
2024-25
Students per teacher
14.1
2024-25

Test score trends

Share of students who met or exceeded the state standard each year.

Latest results by grade

Grade Math English Science
Grade 3 72% state 42% · 2025-26 80% state 41% · 2025-26 —
Grade 4 62% state 39% · 2025-26 68% state 47% · 2025-26 —
Grade 5 55% state 39% · 2025-26 71% state 50% · 2025-26 59% state 36% · 2025-26
Grade 6 62% state 33% · 2025-26 63% state 42% · 2025-26 —
Grade 7 43% state 33% · 2025-26 62% state 47% · 2025-26 —
Grade 8 63% state 38% · 2025-26 63% state 42% · 2025-26 67% state 35% · 2025-26
All grades 60% state 38% · 2025-26 68% state 45% · 2025-26 63% state 36% · 2025-26
Results by year (all grades)
School year Math English Science
2025-26 60% state 38% 68% state 45% 63% state 36%
2024-25 55% state 36% 71% state 45% 61% state 38%
2023-24 53% state 34% 67% state 44% 51% state 35%
2022-23 53% state 33% 69% state 44% 59% state 33%
2021-22 52% state 31% 65% state 43% —
2018-19 59% state 35% 78% state 46% —
2017-18 — 70% state 45% —

Students

Race and ethnicity, 2024-25

Students with disabilities: 14% of students (52) receive special education under an IEP (individualized education program), 2023-24; another 6% have only a Section 504 plan (support such as extra time or seating, without special education), 2023-24. Source: U.S. Department of Education, Civil Rights Data Collection.

Year-by-year history is loaded from the NCES Common Core of Data (2017-18 onward).

Nearby schools

Subject percentages show the share of students who met or exceeded the state standard.

Pick to compare
Manhattan Middle School of the Arts and Academics
Grades 6–8 · Boulder Valley School District No. Re2
0.5 mi
56%
+22 vs state
73%
+29 vs state
71%
+36 vs state
15% Average of math, English and science: 52% in 2022-23 → 67% in 2025-26 31% 482 White 60%
Creekside Elementary School at Martin Park
Grades PK–5 · Boulder Valley School District No. Re2
0.7 mi
67%
+27 vs state
71%
+25 vs state
68%
+32 vs state
3% Average of math, English and science: 66% in 2022-23 → 69% in 2025-26 30% 359 White 66%
Summit Middle Charter School
Grades 6–8 Charter · Boulder Valley School District No. Re2
0.7 mi
86%
+52 vs state
83%
+40 vs state
79%
+43 vs state
Average of math, English and science: 83% in 2022-23 → 83% in 2025-26 13% 366 White 64%
High Peaks Elementary School
Grades K–5 · Boulder Valley School District No. Re2
0.8 mi
87%
+47 vs state
88%
+42 vs state
83%
+46 vs state
Average of math, English and science: 84% in 2022-23 → 86% in 2025-26 10% 257 White 48%
Boulder Community School/Integrated Studies
Grades K–5 · Boulder Valley School District No. Re2
0.8 mi
77%
+37 vs state
81%
+34 vs state
76%
+39 vs state
6% Average of math, English and science: 72% in 2022-23 → 78% in 2025-26 — 255 White 83%
Eisenhower Elementary School
Grades PK–5 · Boulder Valley School District No. Re2
1.0 mi
84%
+44 vs state
88%
+42 vs state
87%
+51 vs state
14% Average of math, English and science: 72% in 2022-23 → 86% in 2025-26 22% 308 White 70%
Community Montessori School
Grades PK–6 · Boulder Valley School District No. Re2
1.1 mi
52%
+12 vs state
57%
+11 vs state
47%
+11 vs state
4% Average of math, English and science: 56% in 2022-23 → 52% in 2025-26 29% 277 White 67%
Southern Hills Middle School
Grades 6–8 · Boulder Valley School District No. Re2
1.4 mi
72%
+37 vs state
78%
+35 vs state
74%
+38 vs state
5% Average of math, English and science: 70% in 2022-23 → 75% in 2025-26 11% 502 White 73%
Nevin Platt Middle School
Grades 6–8 · Boulder Valley School District No. Re2
1.6 mi
53%
+19 vs state
65%
+22 vs state
62%
+26 vs state
11% Average of math, English and science: 49% in 2022-23 → 60% in 2025-26 15% 483 White 81%
Bear Creek Elementary School
Grades PK–5 · Boulder Valley School District No. Re2
1.6 mi
91%
+51 vs state
87%
+41 vs state
86%
+49 vs state
Average of math, English and science: 86% in 2022-23 → 88% in 2025-26 8% 318 White 75%