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Stargate Charter School

Public, Charter, Alternative Grades K-12

18^th

SchoolDigger Rank ?

of 950 Colorado Alternative Schools

Better than 98% of Colorado alternative schools

Summary

Stargate Charter School is an alternative public charter school located in Thornton, Colorado, serving grades K-12 with a total enrollment of 1,572 students. The school is part of the Adams 12 Five Star Schools district, which is ranked 52 out of 115 districts in Colorado and has a 3-star rating from SchoolDigger.

Stargate Charter School stands out for its consistently high academic performance, with exceptional graduation rates ranging from 83.1% to 97.8% over the past few years, significantly outperforming the district and state averages. The school also has low dropout rates, ranging from 1.9% to 2.3%, which are lower than the district and state averages. Stargate Charter School students significantly outperform their district and state counterparts in various standardized tests, including CMAS, SAT, and PSAT exams.

Compared to nearby charter schools, such as Prospect Ridge Academy, Westgate Community School, and The Pinnacle Charter School, Stargate Charter School outperforms them in terms of test scores and graduation rates. However, the school has a higher chronic absenteeism rate compared to these nearby schools, which is an area that warrants further investigation and potential improvement.

1,572

Students ?

19.4

Student/teacher ratio ?

$12,095

Per pupil spending ?

10.4%

Free/discounted lunch ?

14530 Washington Street
Thornton, CO 80023

(303) 450-3936

District: Adams 12 Five Star Schools

Racial breakdown:

White:

47.6%

Asian:

29.9%

Hispanic:

10.7%

See top rated Colorado elementary schools

Compare Stargate Charter School to nearby alternative schools!

At a glance

▬ Ranking trend: Holding steady — 100th percentile in 2022 → 99th in 2025

Strengths

✓Test scores above the Colorado average (82% vs 42% meeting standards)

✓Ranks in the top 2% of Colorado alternative schools

✓98% graduate in 4 years — above the Colorado average (84%)

Worth a look

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

Students meeting standards (2024-2025) ?

This school82%

District avg41%

Colorado avg42%

Elementary school

18^th of 950

Colorado public elementary schools ?

Top 2%▲ up 3 pts since 2015

From top 5% (2015) to top 2% (2025)

See the entire ranking list of Colorado Elementary Schools →

★★★★★

SchoolDigger rating ?

Middle school

14^th of 469

Colorado public middle schools ?

Top 3%▬ steady since 2015

See the entire ranking list of Colorado Middle Schools →

★★★★★

SchoolDigger rating ?

High school

3^rd of 328

Colorado public high schools ?

Top 1%▬ steady since 2019

See the entire ranking list of Colorado High Schools →

★★★★★

SchoolDigger rating ?

1^st of 4Alternative Schools in the Adams 12 Five Star Schools

52^nd of 115Adams 12 Five Star Schools 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	96.0	18 of 950	98.1%	★★★★★
2024	95.6	25 of 943	97.3%	★★★★★
2023	95.9	23 of 933	97.5%	★★★★★
2022	95.7	22 of 921	97.6%	★★★★★
2021	95.9	26 of 710	96.3%	★★★★★
2019	95.6	24 of 965	97.5%	★★★★★
2018	94.2	39 of 917	95.7%	★★★★★
2017	89.4	76 of 929	91.8%	★★★★★
2016	94.5	34 of 914	96.3%	★★★★★
2015	92.9	50 of 938	94.7%	★★★★★
2014	89.2	68 of 962	92.9%	★★★★★
2013	90.9	44 of 954	95.4%	★★★★★
2012	90.3	54 of 935	94.2%	★★★★★
2011	91.8	34 of 935	96.4%	★★★★★
2010	92.5	32 of 925	96.5%	★★★★★
2009	92.4	28 of 872	96.8%	★★★★★
2008	93.3	17 of 849	98.0%	★★★★★
2007	94.3	10 of 852	98.8%	★★★★★
2006	94.0	8 of 829	99.0%	★★★★★
2005	92.1	21 of 823	97.4%	★★★★★
2004	90.7	36 of 808	95.5%	★★★★★

Asian

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	75.9	3 of 13	76.9%	★★★★☆
2024	73.7	2 of 12	83.3%	★★★★★
2023	74.3	5 of 15	66.7%	★★★★☆
2022	80.0	2 of 10	80.0%	★★★★☆
2021	77.3	1 of 6	83.3%	★★★★★
2019	83.2	2 of 11	81.8%	★★★★★
2018	70.5	4 of 9	55.6%	★★★☆☆

Female

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	93.5	25 of 694	96.4%	★★★★★
2024	94.2	22 of 684	96.8%	★★★★★
2023	93.6	24 of 642	96.3%	★★★★★
2022	94.9	12 of 595	98.0%	★★★★★
2021	95.5	11 of 351	96.9%	★★★★★
2019	93.9	22 of 758	97.1%	★★★★★
2018	90.3	40 of 690	94.2%	★★★★★

Gifted and Talented

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	6.4	115 of 119	3.4%	☆☆☆☆☆
2024	4.5	89 of 91	2.2%	☆☆☆☆☆
2023	0.7	81 of 82	1.2%	☆☆☆☆☆
2019	13.2	105 of 110	4.5%	☆☆☆☆☆

Male

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	94.3	23 of 700	96.7%	★★★★★
2024	91.8	38 of 683	94.4%	★★★★★
2023	93.2	25 of 649	96.1%	★★★★★
2022	88.8	47 of 594	92.1%	★★★★★
2021	90.7	34 of 352	90.3%	★★★★★
2019	92.7	29 of 764	96.2%	★★★★★
2018	90.5	43 of 693	93.8%	★★★★★

White

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	86.7	37 of 551	93.3%	★★★★★
2024	84.1	51 of 539	90.5%	★★★★★
2023	84.1	51 of 525	90.3%	★★★★★
2022	84.7	47 of 454	89.6%	★★★★☆
2021	83.9	45 of 288	84.4%	★★★★☆
2019	85.8	43 of 596	92.8%	★★★★★
2018	81.5	49 of 337	85.5%	★★★★☆

Middle school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	96.9	14 of 469	97.0%	★★★★★
2024	94.5	19 of 485	96.1%	★★★★★
2023	96.7	8 of 480	98.3%	★★★★★
2022	95.1	18 of 448	96.0%	★★★★★
2021	99.3	5 of 369	98.6%	★★★★★
2019	95.7	14 of 458	96.9%	★★★★★
2018	97.1	11 of 418	97.4%	★★★★★
2017	93.3	16 of 424	96.2%	★★★★★
2016	96.1	12 of 400	97.0%	★★★★★
2015	95.7	15 of 436	96.6%	★★★★★
2014	95.4	11 of 461	97.6%	★★★★★
2013	96.4	6 of 454	98.7%	★★★★★
2012	96.0	5 of 425	98.8%	★★★★★
2011	95.1	10 of 422	97.6%	★★★★★
2010	97.1	5 of 409	98.8%	★★★★★
2009	96.7	3 of 377	99.2%	★★★★★
2008	95.8	6 of 362	98.3%	★★★★★
2007	96.2	5 of 360	98.6%	★★★★★
2006	96.2	3 of 346	99.1%	★★★★★
2005	95.1	6 of 340	98.2%	★★★★★
2004	96.6	4 of 336	98.8%	★★★★★

Asian

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	69.4	10 of 26	61.5%	★★★☆☆
2024	73.3	5 of 21	76.2%	★★★★☆
2023	83.2	2 of 18	88.9%	★★★★★
2022	78.2	3 of 15	80.0%	★★★★☆
2019	84.6	3 of 25	88.0%	★★★★★
2018	90.2	2 of 16	87.5%	★★★★★

Female

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	94.7	12 of 347	96.5%	★★★★★
2024	95.3	10 of 350	97.1%	★★★★★
2023	96.9	6 of 363	98.3%	★★★★★
2022	94.9	8 of 326	97.5%	★★★★★
2021	97.8	5 of 254	98.0%	★★★★★
2019	93.7	15 of 352	95.7%	★★★★★
2018	96.4	8 of 315	97.5%	★★★★★

Gifted and Talented

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	8.5	126 of 132	4.5%	☆☆☆☆☆
2019	15.0	131 of 134	2.2%	☆☆☆☆☆
2018	35.3	99 of 121	18.2%	★☆☆☆☆

Male

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	96.4	12 of 352	96.6%	★★★★★
2024	89.3	29 of 357	91.9%	★★★★★
2023	93.4	17 of 356	95.2%	★★★★★
2022	87.8	30 of 328	90.9%	★★★★★
2021	98.8	4 of 249	98.4%	★★★★★
2019	95.5	14 of 343	95.9%	★★★★★
2018	95.4	12 of 317	96.2%	★★★★★

White

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	88.0	22 of 275	92.0%	★★★★★
2024	80.0	42 of 273	84.6%	★★★★☆
2023	83.9	33 of 286	88.5%	★★★★☆
2022	84.5	30 of 265	88.7%	★★★★☆
2021	94.8	6 of 203	97.0%	★★★★★
2019	86.1	24 of 283	91.5%	★★★★★
2018	89.3	19 of 199	90.5%	★★★★★

High school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	97.9	3 of 328	99.1%	★★★★★
2024	98.2	2 of 349	99.4%	★★★★★
2023	98.2	2 of 349	99.4%	★★★★★
2022	98.2	1 of 221	99.5%	★★★★★
2021	98.2	1 of 210	99.5%	★★★★★
2019	99.3	3 of 411	99.3%	★★★★★

Asian

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	85.2	2 of 43	95.3%	★★★★★
2024	87.4	3 of 43	93.0%	★★★★★
2023	87.5	2 of 43	95.3%	★★★★★
2022	88.6	1 of 45	97.8%	★★★★★
2021	88.6	1 of 41	97.6%	★★★★★

Female

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	97.6	2 of 247	99.2%	★★★★★
2024	97.2	2 of 257	99.2%	★★★★★
2023	97.5	1 of 254	99.6%	★★★★★
2022	97.5	2 of 257	99.2%	★★★★★
2021	97.5	1 of 239	99.6%	★★★★★

Gifted and Talented

Year	Avg score	Statewide rank	Colorado percentile	Rating
2023	61.4	60 of 135	55.6%	★★★☆☆
2022	65.5	32 of 108	70.4%	★★★★☆
2021	58.4	52 of 118	55.9%	★★★☆☆

Hispanic

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	99.8	1 of 187	99.5%	★★★★★
2024	99.5	3 of 199	98.5%	★★★★★
2023	99.5	2 of 198	99.0%	★★★★★

Male

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	97.6	4 of 246	98.4%	★★★★★
2024	98.1	3 of 256	98.8%	★★★★★
2023	98.1	3 of 252	98.8%	★★★★★
2022	98.5	2 of 253	99.2%	★★★★★
2021	97.8	3 of 240	98.8%	★★★★★

White

Year	Avg score	Statewide rank	Colorado percentile	Rating
2025	96.1	4 of 209	98.1%	★★★★★
2024	95.9	2 of 229	99.1%	★★★★★
2023	96.1	4 of 234	98.3%	★★★★★
2022	97.2	1 of 228	99.6%	★★★★★
2021	97.0	2 of 225	99.1%	★★★★★

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

Male (2025)97th percentile~ school

Female (2025)96th percentile~ school

White (2025)93rd percentile-5 vs school

Asian (2025)77th percentile-21 vs school

Gifted and Talented (2025)3rd percentile-95 vs school

Middle school

Male (2025)97th percentile~ school

Female (2025)97th percentile~ school

White (2025)92nd percentile-5 vs school

Asian (2025)62nd percentile-35 vs school

Gifted and Talented (2025)5th percentile-92 vs school

High school

Hispanic (2025)99th percentile~ school

Female (2025)99th percentile~ school

Male (2025)98th percentile~ school

White (2025)98th percentile~ school

Asian (2025)95th percentile-4 vs school

Gifted and Talented (2023)56th percentile-44 vs school

By subject vs Colorado (2024-2025) ?

Reading and Writing98%+36 vs state

Mathematics81%+49 vs state

Math78%+43 vs state

English Language Arts78%+34 vs state

Science76%+41 vs state

4.3

6 ratings · 1 written review

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3★0

2★0

1★1

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What people are saying

by a parent
Thursday, September 2, 2021

From differentiated learning for math and literacy beginning in Kindergarten to a wide variety of AP classes offered in High School, Stargate strives to meet each student's academic needs. The teachers and staff are wonderful! Close Quote

Schools Near Stargate Charter School

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

School													Students/Teachers											Ranking ()				Ranking ()				PSAT10 Reading and Writing (2025)	PSAT10 Mathematics (2025)	PSAT9 Reading and Writing (2025)	PSAT9 Mathematics (2025)	SAT Reading and Writing (2025)	SAT Mathematics (2025)	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 ()	Statewide Rank ()	State Percentile ()	SchoolDigger Rating ()	Average Standard Score ()	Statewide Rank ()	State Percentile ()	Rank Change from Previous Year	PSAT10 Reading and Writing 10th Grade	PSAT10 Mathematics 10th Grade	PSAT9 Reading and Writing 9th Grade	PSAT9 Mathematics 9th Grade	SAT Reading and Writing 11th Grade	SAT Mathematics 11th Grade	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	CMAS Science 11th Grade	Total
Stargate Charter School	Public, Charter, Alternative	K-12	14530 Washington Street	Thornton	80023	Adams County	Adams 12 Five Star Schools	Yes	No	No	No	(303) 450-3936	1,572	81	19.4	10.4%	748 (47.6%)	16 (1.0%)	168 (10.7%)	470 (29.9%)	6 (0.4%)	1 (0.1%)	156 (9.9%)								(n/a)	98.0	84.0	97.0	82.0	98.0	81.0	77.0	70.3	86.5	79.8	78.7	75.0	78.3	85.0	66.0	81.5	82.3	69.2	86.6	78.5	73.6	81.3	71.7	$12,095
Westgate Community School	Public, Charter, Alternative	K-12	12500 Washington St	Thornton	80241	Adams County	Adams 12 Five Star Schools	Yes	No	No	No	(303) 452-0967	540	27	20.0	38.3%	282 (52.2%)	4 (0.7%)	145 (26.9%)	60 (11.1%)	3 (0.6%)	0 (0.0%)	44 (8.1%)								(n/a)	96.0	48.0	87.0	70.0	88.0	46.0	39.6	26.2	48.9	44.2	54.8	63.9	45.7	37.5	11.6	31.9	23.3	23.8	50.0	29.5	36.2	60.5	23.5	$12,648
Prospect Ridge Academy	Public, Charter, Alternative	K-12	2555 Preble Creek Pkwy	Broomfield	80023	Broomfield County	Adams 12 Five Star Schools	Yes	No	No	No	(720) 399-0300	1,478	77	19.1	5.9%	949 (64.2%)	11 (0.7%)	196 (13.3%)	219 (14.8%)	6 (0.4%)	1 (0.1%)	96 (6.5%)								(n/a)	88.0	68.0	87.0	65.0	86.0	65.0	56.4	62.0	56.4	52.3	58.0	63.0	57.8	54.7	52.7	63.6	46.8	42.9	75.8	55.7	66.4	65.7	59.5	$13,375
Five Star Online Academy	Public, Virtual, Alternative	1-12	1865 W. 121st Ave #100	Westminster	80234	Adams County	Adams 12 Five Star Schools	No	(n/a)	Yes	(n/a)	(720) 972-7430	506	33	15.4		201 (39.7%)	13 (2.6%)	233 (46.0%)	19 (3.8%)	10 (2.0%)	0 (0.0%)	26 (5.1%)								(n/a)	45.0		56.0		36.0				31.6	21.4			18.7				14.3			8.3				$14,997
Academy of Charter Schools	Public, Charter, Alternative	PK, KG-12	11800 Lowell Blvd	Westminster	80031	Adams County	State Charter School Institute	Yes	No	No	No	(303) 289-8088	1,887	100	18.8	33.9%	1,036 (54.9%)	18 (1.0%)	598 (31.7%)	121 (6.4%)	6 (0.3%)	1 (0.1%)	107 (5.7%)								(n/a)	72.0	33.0	77.0	33.0	69.0	29.0	49.0	33.3	58.9	58.2	63.6	41.0	50.8	43.4	30.5	42.1	36.1	36.8	36.4	37.8	35.0	50.0	44.4	$11,643
Peak to Peak Charter School	Public, Charter, Alternative	K-12	800 Merlin Drive	Lafayette	80026	Boulder County	Boulder Valley School District No. Re2	Yes	No	No	No	(303) 453-4600	1,447	82	17.6	17.6%	806 (55.7%)	11 (0.8%)	185 (12.8%)	337 (23.3%)	3 (0.2%)	3 (0.2%)	101 (7.0%)								(n/a)	92.0	74.0	92.0	74.0	88.0	68.0	55.3	72.7	75.7	75.2	76.0	61.8	69.8	60.5	70.1	72.6	66.7	60.8	42.3	60.9	77.0	52.9	62.7	$13,914
York International	Public, Magnet, Alternative	K-12	9200 York St	Thornton	80229	Adams County	Mapleton School District No. 1	No	Yes	No	Yes	(303) 853-1600	776	40	19.4	73.5%	60 (7.7%)	5 (0.6%)	663 (85.4%)	37 (4.8%)	1 (0.1%)	0 (0.0%)	10 (1.3%)								(n/a)	40.0	25.0	46.0	28.0	45.0	12.0	19.2	21.2	43.5	35.1	30.0	25.9	29.0	23.1	24.5	41.3	17.9	13.6	17.0	22.3	13.0	17.6		$14,721
Doral Academy of Colorado	Public, Charter, Alternative	K-12	10110 Church Ranch Way	Westminster	80021	Jefferson County	Jefferson County School District No. R-1	Yes	No	No	No	(303) 250-3627	168	11	15.1	52.4%	85 (50.6%)	6 (3.6%)	60 (35.7%)	1 (0.6%)	0 (0.0%)	0 (0.0%)	16 (9.5%)								(n/a)										28.6	30.0	44.4	24.1							6.5		38.9		$14,159
The Pinnacle Charter School	Public, Charter, Alternative	K-12	1001 W 84th Ave	Federal Heights	80260	Adams County	State Charter School Institute	Yes	No	No	Yes	(303) 450-3985	1,905	111	17.1	81.0%	164 (8.6%)	19 (1.0%)	1,669 (87.6%)	29 (1.5%)	8 (0.4%)	1 (0.1%)	15 (0.8%)								(n/a)	36.0	6.0	46.0	11.0	34.0	6.0	10.4	5.9	17.5	19.2	21.7	24.3	16.8	10.8	7.9	5.3	8.9	7.5	12.3	8.8	10.0	15.0	5.6	$11,898
Destinations Career Academy of Colorado	Public, Virtual, Alternative	4-12	8601 Turnpike Dr. Suite 100	Westminster	80031	Adams County	Julesburg School District No. Re1	No	No	Yes	No	(303) 128-6266	453	13	34.2		230 (50.8%)	22 (4.9%)	171 (37.7%)	7 (1.5%)	3 (0.7%)	0 (0.0%)	20 (4.4%)								(n/a)											18.8													$9,102

Frequently Asked Questions about Stargate Charter School

What is the racial makeup of Stargate Charter School?

Students at Stargate Charter School are 48% White, 30% Asian, 11% Hispanic, 10% Two or more races, 1% African American.

What district is Stargate Charter School in?

Adams 12 Five Star Schools

Is Stargate Charter School a good school?

Yes! Stargate Charter School is one of the best alternative schools in the state. It ranks 18^th of 950 Colorado alternative schools.

How many students attend Stargate Charter School?

In the 2024-25 school year, 1,572 students attended Stargate Charter School.

Rate Stargate Charter 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.