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Horizons K-8 School

Q: Is Horizons K-8 School a good school?

Horizons K-8 School ranks 186 th of 950 Colorado elementary schools. SchoolDigger rates this school 4 stars out of 5.

Public, Charter Grades K-8

186^th

SchoolDigger Rank ?

of 950 Colorado Elementary Schools

Better than 80% of Colorado elementary schools

Summary

Horizons K-8 School is a high-performing public charter school in Boulder, Colorado, serving grades K-8 and part of the highly-ranked Boulder Valley School District. The school has consistently been ranked among the top elementary schools in the state, with strong academic achievement across all grade levels and subject areas.

Horizons K-8 School's academic performance is particularly noteworthy, with students consistently outperforming the state and district averages in CMAS assessments. In the 2024-2025 school year, 70.7% of Horizons students were proficient or better in English Language Arts, compared to 65.6% for the district and 44.8% for the state. In Math, the school had 54.6% proficiency, compared to 55.1% for the district and 35.9% for the state. However, the data also reveals some disparities in the performance of different student subgroups, with female students and white students performing better than the school's overall student population.

When compared to other nearby schools in the Boulder Valley School District, Horizons K-8 School generally outperforms them in academic achievement, particularly in English Language Arts and Science. Schools like High Peaks Elementary and Creekside Elementary School at Martin Park have even stronger performance, ranking among the top 5-30 elementary schools in the state. Horizons K-8 School also has a relatively low student-teacher ratio, which may contribute to its academic success.

358

Students ?

14.0

Student/teacher ratio ?

$12,456

Per pupil spending ?

17.6%

Free/discounted lunch ?

4545 Sioux Drive
Boulder, CO 80303-3732

(720) 561-5580

District: Boulder Valley School District No. Re2

Racial breakdown:

White:

82.7%

Two or more races:

7.5%

Hispanic:

5.9%

See top rated Colorado elementary schools

Compare Horizons K-8 School to nearby elementary schools!

At a glance

▼ Ranking trend: Declining — 92nd percentile in 2012 → 80th in 2025

Strengths

✓Test scores above the Colorado average (63% vs 40% meeting standards)

✓Ranks in the top 20% of Colorado elementary schools

Worth a look

!Ranking has slipped — down 12 percentile points since 2012

!Some student groups rank well below the school's overall statewide standing

Students meeting standards (2024-2025) ?

This school63%

District avg60%

Colorado avg40%

Elementary school

186^th of 950

Colorado public elementary schools ?

Top 20%▼ down 15 pts since 2018

From top 5% (2018) to top 20% (2025)

See the entire ranking list of Colorado Elementary Schools →

★★★★★

SchoolDigger rating ?

Middle school

56^th of 469

Colorado public middle schools ?

Top 12%▲ up 2 pts since 2018

See the entire ranking list of Colorado Middle Schools →

★★★★★

SchoolDigger rating ?

17^th of 32Elementary Schools in the Boulder Valley School District No. Re2

8^th of 115Boulder Valley School District No. Re2 among Colorado districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Elementary school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	79.2	186 of 950	80.4%	★★★★☆
2024	77.2	194 of 943	79.4%	★★★★☆
2023	81.7	150 of 933	83.9%	★★★★☆
2022	78.2	185 of 921	79.9%	★★★★☆
2021	87.1	83 of 710	88.3%	★★★★☆
2019	88.3	91 of 965	90.6%	★★★★★
2018	93.9	42 of 917	95.4%	★★★★★
2014	84.1	123 of 962	87.2%	★★★★☆
2013	81.9	143 of 954	85.0%	★★★★☆
2012	88.7	77 of 935	91.8%	★★★★★
2011	88.9	68 of 935	92.7%	★★★★★
2010	86.7	85 of 925	90.8%	★★★★★
2009	88.6	60 of 872	93.1%	★★★★★
2008	88.2	61 of 849	92.8%	★★★★★
2007	87.4	62 of 852	92.7%	★★★★★
2006	87.2	67 of 829	91.9%	★★★★★
2005	88.5	50 of 823	93.9%	★★★★★
2004	90.5	37 of 808	95.4%	★★★★★

Female

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	80.7	106 of 694	84.7%	★★★★☆
2024	84.1	81 of 684	88.2%	★★★★☆

Male

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	63.7	227 of 700	67.6%	★★★☆☆
2024	59.2	261 of 683	61.8%	★★★☆☆

White

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	60.0	208 of 551	62.3%	★★★☆☆
2024	60.6	213 of 539	60.5%	★★★☆☆
2023	63.0	185 of 525	64.8%	★★★☆☆
2022	61.6	176 of 454	61.2%	★★★☆☆
2019	74.7	119 of 596	80.0%	★★★★☆

Middle school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	84.4	56 of 469	88.1%	★★★★☆
2024	89.1	41 of 485	91.5%	★★★★★
2023	88.6	43 of 480	91.0%	★★★★★
2022	90.5	32 of 448	92.9%	★★★★★
2019	92.6	24 of 458	94.8%	★★★★★
2018	80.8	58 of 418	86.1%	★★★★☆
2014	73.5	109 of 461	76.4%	★★★★☆
2013	53.6	216 of 454	52.4%	★★★☆☆
2012	89.2	28 of 425	93.4%	★★★★★
2011	89.6	27 of 422	93.6%	★★★★★
2010	89.1	25 of 409	93.9%	★★★★★
2009	90.6	20 of 377	94.7%	★★★★★
2008	90.3	20 of 362	94.5%	★★★★★
2007	88.0	29 of 360	91.9%	★★★★★
2006	90.4	18 of 346	94.8%	★★★★★
2005	91.0	14 of 340	95.9%	★★★★★
2004	94.1	8 of 336	97.6%	★★★★★

Female

Year	Avg score	Statewide rank	Colorado percentile	Rating
2023	66.6	106 of 363	70.8%	★★★★☆

White

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	80.8	38 of 275	86.2%	★★★★☆
2024	81.3	39 of 273	85.7%	★★★★☆
2023	85.5	27 of 286	90.6%	★★★★★
2022	87.1	20 of 265	92.5%	★★★★★
2019	82.1	32 of 283	88.7%	★★★★☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

Elementary school

Female (2025)85th percentile+4 vs school

Male (2025)68th percentile-13 vs school

White (2025)62nd percentile-18 vs school

Middle school

White (2025)86th percentile~ school

Female (2023)71st percentile-20 vs school

By subject vs Colorado (2024-2025) ?

English Language Arts71%+26 vs state

Science61%+24 vs state

Math55%+19 vs state

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Schools Near Horizons K-8 School

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				CMAS English Language Arts (2025)							CMAS Math (2025)							CMAS Science (2025)		Per Pupil Expenditures (2024)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	CMAS English Language Arts 3rd Grade	CMAS English Language Arts 4th Grade	CMAS English Language Arts 5th Grade	CMAS English Language Arts 6th Grade	CMAS English Language Arts 7th Grade	CMAS English Language Arts 8th Grade	CMAS English Language Arts All Grades	CMAS Math 3rd Grade	CMAS Math 4th Grade	CMAS Math 5th Grade	CMAS Math 6th Grade	CMAS Math 7th Grade	CMAS Math 8th Grade	CMAS Math All Grades	CMAS Science 5th Grade	CMAS Science 8th Grade	Total
Horizons K-8 School	Public, Charter	K-8	4545 Sioux Drive	Boulder	80303	Boulder County	Boulder Valley School District No. Re2	Yes	No	No	No	(720) 561-5580	358	25	14.0	17.6%	296 (82.7%)	4 (1.1%)	21 (5.9%)	7 (2.0%)	1 (0.3%)	0 (0.0%)	27 (7.5%)	79.2	186^th of 950 public elementary schools	80.4%		77.2	194^th of 943 public elementary schools	79.4%	8	72.1	68.3	68.3	68.6	76.9	69.7	70.7	60.5	48.7	57.5	28.6	71.8	58.1	54.6	55.0	70.0	$12,456
Creekside Elementary School at Martin Park	Public	PK, KG-5	3740 Martin Drive	Boulder	80305	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-3800	359	21	17.3	30.1%	237 (66.0%)	6 (1.7%)	63 (17.5%)	26 (7.2%)	1 (0.3%)	0 (0.0%)	26 (7.2%)	95	30^th of 950 public elementary schools	96.8%		94.2	31^st of 943 public elementary schools	96.7%	1	71.2	71.2	90.2				77.4	69.8	75.0	80.4				75.0	74.0		$20,030
High Peaks Elementary School	Public	K-5	3995 East Aurora Avenue	Boulder	80303	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-6500	257	16	16.3	9.7%	124 (48.2%)	1 (0.4%)	16 (6.2%)	70 (27.2%)	0 (0.0%)	0 (0.0%)	46 (17.9%)	99.3	2^nd of 950 public elementary schools	99.8%		98.9	4^th of 943 public elementary schools	99.6%	2	93.0	91.7	100.0				94.7	95.3	87.5	95.2				92.5	81.0		$18,629
Boulder Community School/Integrated Studies	Public	K-5	3995 East Aurora Avenue	Boulder	80303	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-6500	255	15	16.7		210 (82.4%)	0 (0.0%)	22 (8.6%)	4 (1.6%)	0 (0.0%)	0 (0.0%)	18 (7.1%)	93.1	42^nd of 950 public elementary schools	95.6%		93.7	35^th of 943 public elementary schools	96.3%	7	68.9	84.6	93.0				81.9	52.2	80.0	95.1				74.8	90.2		$19,096
Eisenhower Elementary School	Public	PK, KG-5	1220 Eisenhower Drive	Boulder	80303	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-6700	308	20	15.2	22.4%	215 (69.8%)	6 (1.9%)	40 (13.0%)	14 (4.5%)	0 (0.0%)	0 (0.0%)	32 (10.4%)	96.7	14^th of 950 public elementary schools	98.5%		93.4	39^th of 943 public elementary schools	95.9%	25	76.5	89.8	85.1				85.0	66.7	78.7	83.0				77.1	78.7		$20,732
Community Montessori School	Public	PK, KG-6	805 Gillaspie Dr	Boulder	80305	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-3700	277	16	17.7	29.2%	185 (66.8%)	3 (1.1%)	52 (18.8%)	13 (4.7%)	1 (0.4%)	1 (0.4%)	21 (7.6%)	74.6	230^th of 950 public elementary schools	75.8%		73.5	229^th of 943 public elementary schools	75.7%	1	43.3	62.9	61.3				56.3	46.7	48.6	64.5				53.1	66.7		$20,263
Bear Creek Elementary School	Public	PK, KG-5	2500 Table Mesa Drive	Boulder	80305	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-3500	318	17	18.5	7.5%	239 (75.2%)	2 (0.6%)	23 (7.2%)	24 (7.5%)	0 (0.0%)	0 (0.0%)	30 (9.4%)	98.4	8^th of 950 public elementary schools	99.2%		98.8	6^th of 943 public elementary schools	99.4%	2	88.7	81.1	87.5				85.8	80.8	83.3	91.2				85.3	89.1		$19,750
Mesa Elementary School	Public	PK, KG-5	1575 Lehigh Street	Boulder	80305	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-3000	250	16	15.7	13.6%	193 (77.2%)	0 (0.0%)	26 (10.4%)	7 (2.8%)	1 (0.4%)	1 (0.4%)	22 (8.8%)	92.2	51^st of 950 public elementary schools	94.6%		88.8	88^th of 943 public elementary schools	90.7%	37	77.8	64.3	77.6				73.2	58.3	64.3	81.6				69.3	85.4		$22,742
University Hill Elementary School	Public	PK, KG-5	956 16th Street	Boulder	80302	Boulder County	Boulder Valley School District No. Re2	No	No	No	Yes	(720) 561-5416	405	26	15.6	61.5%	111 (27.4%)	1 (0.2%)	283 (69.9%)	1 (0.2%)	2 (0.5%)	0 (0.0%)	7 (1.7%)	53.3	422^nd of 950 public elementary schools	55.6%		54	413^th of 943 public elementary schools	56.2%	9	38.2	67.4	46.9				51.1	33.3	43.8	44.6				40.6	36.9		$22,369
Whittier Elementary School	Public	K-5	2008 Pine Street	Boulder	80302	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-5431	269	20	13.1	42.0%	150 (55.8%)	2 (0.7%)	91 (33.8%)	8 (3.0%)	0 (0.0%)	0 (0.0%)	18 (6.7%)	48.4	455^th of 950 public elementary schools	52.1%		49.6	454^th of 943 public elementary schools	51.9%	1	50.0	39.0	41.2				43.1			43.1				32.6	35.3		$23,144

Frequently Asked Questions about Horizons K-8 School

What is the racial makeup of Horizons K-8 School?

Students at Horizons K-8 School are 83% White, 8% Two or more races, 6% Hispanic, 2% Asian, 1% African American.

What district is Horizons K-8 School in?

Boulder Valley School District No. Re2

Is Horizons K-8 School a good school?

Horizons K-8 School ranks 186^th of 950 Colorado elementary schools. SchoolDigger rates this school 4 stars out of 5.

How many students attend Horizons K-8 School?

In the 2024-25 school year, 358 students attended Horizons K-8 School.

Rate Horizons K-8 School!

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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Colorado Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.