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Colony High

Q: Is Colony High a good school?

Colony High ranks 929 th of 2162 California high schools. SchoolDigger rates this school 3 stars out of 5.

Public Grades 9-12

929^th

SchoolDigger Rank ?

of 2,162 California High Schools

Better than 57% of California high schools

Summary

Colony High is a public high school located in Ontario, California, serving 2,085 students in grades 9-12. It is part of the Chaffey Joint Union High School District, which is ranked 393 out of 1,543 districts in the state.

While Colony High's academic performance, as measured by standardized test scores, is generally lower than the district and state averages, the school's performance is comparable or better than some nearby high schools in other districts. For example, in the 2024-2025 school year, only 53.73% of Colony High students were proficient or better in English Language Arts/Literacy, compared to 68.05% for the Chaffey Joint Union High School District and 56.96% for the state of California. In Mathematics, the proficiency rate was even lower at 20.95%, compared to 34.42% for the district and 30.5% for the state. However, when compared to Chino High and Henry J. Kaiser High, Colony High appears to perform better in some areas.

The school's relatively high chronic absenteeism rate, ranging from 20.4% to 25.5% in recent years, may be a contributing factor to the lower academic achievement, as regular attendance is crucial for student success. Additionally, the high percentage of free and reduced-price lunch recipients at Colony High (around 70-75%) suggests that the school serves a population with a higher socioeconomic need, which may also impact academic performance. The school's leadership and the Chaffey Joint Union High School District may want to explore targeted interventions and support to address these challenges and improve overall student outcomes.

2,109

Students ?

25.9

Student/teacher ratio ?

$18,722

Per pupil spending ?

69.7%

Free/discounted lunch ?

3850 East Riverside Dr.
Ontario, CA 91761-2603

(909) 930-2929

District: Chaffey Joint Union High

Feeder schools for Colony High:

Elementary:	Creek View Elementary
	Del Norte Elementary
	Mountain View Elementary
	Ontario Center
	More...
	Perdew Elementary
	Ranch View Elementary
Middle:	Grace Yokley Junior High
	Rancho Cucamonga Middle

Racial breakdown:

Hispanic:

66.4%

African American:

12.8%

Asian:

9.0%

See top rated California high schools

Compare Colony High to nearby high schools!

At a glance

▬ Ranking trend: Holding steady — 61st percentile in 2015 → 57th in 2025

Strengths

✓Above the California median (57th percentile)

Worth a look

!Test scores below the California average (33% vs 41% meeting standards)

!High chronic absenteeism (31% vs 19% California)

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

Students meeting standards (2024-2025) ?

This school33%

District avg45%

California avg41%

929^th of 2,162

California public high schools ?

Top 43%▼ down 4 pts since 2015

From top 39% (2015) to top 43% (2025)

See the entire ranking list of California High Schools →

★★★★★

SchoolDigger rating ?

9^th of 10High Schools in the Chaffey Joint Union High

393^rd of 1,543Chaffey Joint Union High among California districts

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

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2025	55.3	929 of 2162	57.0%	★★★☆☆
2024	61.1	738 of 2159	65.8%	★★★☆☆
2023	63.4	691 of 2170	68.2%	★★★☆☆
2022	61.4	685 of 2123	67.7%	★★★☆☆
2021	72.1	324 of 1290	74.9%	★★★★☆
2019	63.2	669 of 2133	68.6%	★★★☆☆
2018	73.9	517 of 2017	74.4%	★★★★☆
2017	57.8	843 of 2021	58.3%	★★★☆☆
2016	56.1	877 of 2039	57.0%	★★★☆☆
2015	58.6	777 of 1994	61.0%	★★★☆☆
2013	45.2	921 of 2426	62.0%	★★★☆☆
2012	56.3	644 of 2354	72.6%	★★★★☆
2011	56.5	628 of 2367	73.5%	★★★★☆
2010	50.8	741 of 2281	67.5%	★★★☆☆
2009	53.3	655 of 2238	70.7%	★★★★☆
2008	46.6	749 of 2117	64.6%	★★★☆☆
2007	49.1	670 of 2063	67.5%	★★★☆☆
2006	42.2	789 of 1968	59.9%	★★★☆☆
2005	43.3	731 of 1901	61.5%	★★★☆☆
2004	43.6	616 of 1653	62.7%	★★★☆☆

African American

Year	Avg score	Statewide rank	California percentile	Rating
2025	44.2	258 of 523	50.7%	★★★☆☆
2024	49.2	215 of 517	58.4%	★★★☆☆
2023	62.4	165 of 521	68.3%	★★★☆☆
2022	60.4	157 of 522	69.9%	★★★★☆
2019	60.0	185 of 592	68.8%	★★★☆☆
2018	55.5	222 of 582	61.9%	★★★☆☆

Asian

Year	Avg score	Statewide rank	California percentile	Rating
2025	20.4	475 of 585	18.8%	★☆☆☆☆
2024	28.8	428 of 573	25.3%	★☆☆☆☆
2023	36.9	403 of 591	31.8%	★★☆☆☆
2022	56.9	280 of 581	51.8%	★★★☆☆
2019	56.0	292 of 582	49.8%	★★★☆☆
2018	58.5	285 of 581	50.9%	★★★☆☆

Disabled

Year	Avg score	Statewide rank	California percentile	Rating
2022	43.8	495 of 1161	57.4%	★★★☆☆
2021	15.9	551 of 555	0.7%	☆☆☆☆☆
2019	30.5	759 of 1117	32.1%	★★☆☆☆
2018	34.9	613 of 1052	41.7%	★★☆☆☆

English Language Learner

Year	Avg score	Statewide rank	California percentile	Rating
2024	36.2	680 of 1085	37.3%	★★☆☆☆
2023	65.2	166 of 1064	84.4%	★★★★☆
2022	44.1	424 of 1044	59.4%	★★★☆☆
2019	47.2	326 of 941	65.4%	★★★☆☆
2018	43.0	393 of 938	58.1%	★★★☆☆

Female

Year	Avg score	Statewide rank	California percentile	Rating
2025	51.3	885 of 1906	53.6%	★★★☆☆
2024	54.0	797 of 1915	58.4%	★★★☆☆
2023	62.8	623 of 1915	67.5%	★★★☆☆
2022	60.9	601 of 1858	67.7%	★★★☆☆
2021	75.2	243 of 1054	76.9%	★★★★☆
2019	61.2	619 of 1833	66.2%	★★★☆☆
2018	72.9	484 of 1760	72.5%	★★★★☆

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2025	66.3	573 of 1900	69.8%	★★★☆☆
2024	71.1	458 of 1902	75.9%	★★★★☆
2023	71.7	446 of 1917	76.7%	★★★★☆
2022	68.7	459 of 1861	75.3%	★★★★☆
2019	68.7	461 of 1814	74.6%	★★★★☆
2018	83.2	261 of 1742	85.0%	★★★★☆

Homeless

Year	Avg score	Statewide rank	California percentile	Rating
2025	47.0	200 of 410	51.2%	★★★☆☆
2024	68.7	76 of 328	76.8%	★★★★☆
2023	70.8	62 of 299	79.3%	★★★★☆
2022	62.3	89 of 290	69.3%	★★★☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2025	59.5	761 of 2013	62.2%	★★★☆☆
2024	64.6	607 of 2026	70.0%	★★★★☆
2023	71.2	456 of 2030	77.5%	★★★★☆
2022	66.7	507 of 1943	73.9%	★★★★☆
2021	78.1	203 of 1126	82.0%	★★★★☆
2019	67.2	514 of 1937	73.5%	★★★★☆
2018	76.7	372 of 1862	80.0%	★★★★☆

Male

Year	Avg score	Statewide rank	California percentile	Rating
2025	51.6	885 of 1942	54.4%	★★★☆☆
2024	61.9	650 of 1948	66.6%	★★★☆☆
2023	59.4	684 of 1963	65.2%	★★★☆☆
2022	57.6	690 of 1916	64.0%	★★★☆☆
2021	57.9	427 of 1122	61.9%	★★★☆☆
2019	58.9	680 of 1880	63.8%	★★★☆☆
2018	70.0	531 of 1834	71.0%	★★★★☆

Multi-racial

Year	Avg score	Statewide rank	California percentile	Rating
2025	9.5	530 of 577	8.1%	☆☆☆☆☆
2024	27.1	429 of 574	25.3%	★☆☆☆☆
2023	39.0	342 of 541	36.8%	★★☆☆☆
2022	31.2	381 of 515	26.0%	★☆☆☆☆
2019	18.8	348 of 422	17.5%	★☆☆☆☆

Special Education

Year	Avg score	Statewide rank	California percentile	Rating
2025	30.3	872 of 1252	30.4%	★★☆☆☆
2024	32.5	774 of 1216	36.3%	★★☆☆☆
2023	47.0	489 of 1197	59.1%	★★★☆☆

White

Year	Avg score	Statewide rank	California percentile	Rating
2025	38.8	749 of 1155	35.2%	★★☆☆☆
2024	40.1	735 of 1173	37.3%	★★☆☆☆
2023	44.7	675 of 1193	43.4%	★★☆☆☆
2022	51.4	575 of 1204	52.2%	★★★☆☆
2019	70.2	335 of 1222	72.6%	★★★★☆
2018	68.1	401 of 1173	65.8%	★★★☆☆

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)

Hispanic (2025)70th percentile+13 vs school

Low Socio Economic Status (2025)62nd percentile+5 vs school

Disabled (2022)57th percentile-10 vs school

Male (2025)54th percentile-3 vs school

Female (2025)54th percentile-3 vs school

Homeless (2025)51st percentile-6 vs school

African American (2025)51st percentile-6 vs school

English Language Learner (2024)37th percentile-28 vs school

White (2025)35th percentile-22 vs school

Special Education (2025)30th percentile-27 vs school

Asian (2025)19th percentile-38 vs school

Multi-racial (2025)8th percentile-49 vs school

By subject vs California (2024-2025) ?

English Language Arts/Literacy54%+5 vs state

Science24%-8 vs state

Mathematics21%-16 vs state

★

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Schools Near Colony High

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

School													Students/Teachers											Ranking (2025)				Ranking (2024)				CAST Science (2025)			Smarter Balanced Assessments English Language Arts/Literacy (2025)		Smarter Balanced Assessments Mathematics (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	CAST Science 11th Grade	CAST Science 12th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 11th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 11th Grade	Smarter Balanced Assessments Mathematics All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Colony High	Public	9-12	3850 East Riverside Dr.	Ontario	91761	San Bernardino County	Chaffey Joint Union High	No	(n/a)	No	(n/a)	(909) 930-2929	2,109	81	25.9	69.7%	153 (7.3%)	270 (12.8%)	1,400 (66.4%)	190 (9.0%)	7 (0.3%)	21 (1.0%)	66 (3.1%)	55.3	929^th of 2162 public high schools	57.0%		61.1	738^th of 2159 public high schools	65.8%	191		24.3	24.3	53.7	53.7	21.0	21.0	$18,722	$1,443	$17,279
Jurupa Valley High	Public	9-12	10551 Bellegrave Ave.	Jurupa Valley	91752	Riverside County	Jurupa Unified	No	(n/a)	No	(n/a)	(951) 360-2600	1,693	71	23.7	81.6%	90 (5.3%)	19 (1.1%)	1,518 (89.7%)	34 (2.0%)	2 (0.1%)	2 (0.1%)	28 (1.7%)	38.3	1304^th of 2162 public high schools	39.7%		36	1340^th of 2159 public high schools	37.9%	36	20.6	0.0	19.6	45.8	45.8	15.8	15.8	$21,337	$1,911	$19,426
Eleanor Roosevelt High	Public	9-12	7447 Scholar Way	Eastvale	92880	Riverside County	Corona-Norco Unified	No	(n/a)	No	(n/a)	(951) 738-2100	4,353	170	25.6	66.2%	569 (13.1%)	406 (9.3%)	1,798 (41.3%)	1,414 (32.5%)	15 (0.3%)	13 (0.3%)	135 (3.1%)	85.9	287^th of 2162 public high schools	86.7%		86.5	296^th of 2159 public high schools	86.3%	9	46.1	18.5	45.4	70.3	70.3	53.6	53.6	$15,101	$607	$14,494
Baldy View Regional Occupational Program	Public	9-12	1501 South Bon View Ave.	Ontario	91761	San Bernardino County	Baldy View Regional Occupational Program	No	(n/a)	(n/a)	(n/a)	(909) 947-3400	0				0 ()	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()								(n/a)
Henry J. Kaiser High	Public	9-12	11155 Almond Ave.	Fontana	92337	San Bernardino County	Fontana Unified	No	(n/a)	No	(n/a)	(909) 357-5900	1,660	86	19.3	86.1%	58 (3.5%)	77 (4.6%)	1,459 (87.9%)	53 (3.2%)	1 (0.1%)	1 (0.1%)	10 (0.6%)	58.9	851^st of 2162 public high schools	60.6%		57	834^th of 2159 public high schools	61.4%	17	21.7		21.6	54.0	54.0	39.6	39.6	$35,289	$5,178	$30,111
Valley View High (Continuation)	Public	9-12	1801 East Sixth St.	Ontario	91764	San Bernardino County	Chaffey Joint Union High	No	(n/a)	No	(n/a)	(909) 985-0966	370	25	14.8	84.9%	33 (8.9%)	28 (7.6%)	289 (78.1%)	7 (1.9%)	3 (0.8%)	1 (0.3%)	8 (2.2%)	13.5	1856^th of 2162 public high schools	14.2%		13.6	1867^th of 2159 public high schools	13.5%	11		6.1	6.1	11.1	11.1	3.4	3.4	$29,172	$1,300	$27,872
Chaffey District Online High	Public, Virtual	9-12	1802 East 7th St.	Ontario	91764	San Bernardino County	Chaffey Joint Union High	No	(n/a)	Yes	(n/a)	(909) 985-0966	93	5	18.3	62.4%	22 (23.7%)	4 (4.3%)	55 (59.1%)	6 (6.5%)	0 (0.0%)	0 (0.0%)	6 (6.5%)	86	286^th of 2162 public high schools	86.8%		97.1	67^th of 2159 public high schools	96.9%	219		50.0	50.0	58.3	58.3	65.2	65.2	$17,914	$359	$17,555
Chaffey Community Day	Public	9-12	1802 East Seventh St.	Ontario	91764	San Bernardino County	Chaffey Joint Union High	No	(n/a)	No	(n/a)	(909) 985-0966	20	2	9.0	85.0%	0 (0.0%)	4 (20.0%)	16 (80.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)								(n/a)								$61,545	$4,255	$57,290
Ontario High	Public	9-12	901 West Francis St.	Ontario	91762	San Bernardino County	Chaffey Joint Union High	No	(n/a)	No	(n/a)	(909) 988-7411	1,994	91	21.8	86.7%	47 (2.4%)	54 (2.7%)	1,773 (88.9%)	66 (3.3%)	16 (0.8%)	7 (0.4%)	30 (1.5%)	62.9	744^th of 2162 public high schools	65.6%		59.6	775^th of 2159 public high schools	64.1%	31		20.0	20.0	62.6	62.6	29.6	29.6	$19,219	$1,701	$17,518
Chaffey High	Public	9-12	1245 North Euclid Ave.	Ontario	91762	San Bernardino County	Chaffey Joint Union High	No	(n/a)	No	(n/a)	(909) 988-5560	3,127	134	23.3	81.5%	88 (2.8%)	99 (3.2%)	2,777 (88.8%)	80 (2.6%)	18 (0.6%)	8 (0.3%)	55 (1.8%)	55.9	910^th of 2162 public high schools	57.9%		54.3	900^th of 2159 public high schools	58.3%	10		21.9	21.9	58.8	58.8	20.5	20.5	$18,012	$1,530	$16,482

Frequently Asked Questions about Colony High

What district is Colony High in?

Chaffey Joint Union High

How many students attend Colony High?

In the 2024-25 school year, 2,109 students attended Colony High.

Is Colony High a good school?

Colony High ranks 929^th of 2162 California high schools. SchoolDigger rates this school 3 stars out of 5.

What is the racial makeup of Colony High?

Students at Colony High are 66% Hispanic, 13% African American, 9% Asian, 7% White, 3% Two or more races.

What schools feed into Colony High?

Colony High is fed by the following schools:

Elementary : Creek View Elementary
Elementary : Del Norte Elementary
Elementary : Mountain View Elementary
Elementary : Ontario Center
Elementary : Perdew Elementary
Elementary : Ranch View Elementary
Middle : Grace Yokley Junior High
Middle : Rancho Cucamonga Middle

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