High Schools in Chaffey Joint Union High

Summary:

The Chaffey Joint Union High district consists of 11 high schools serving grades 9-12 across several communities including Ontario, Rancho Cucamonga, and Montclair, with a total enrollment of over 22,000 students.

When comparing schools, Los Osos High and Etiwanda High are standout performers, consistently ranking in the state's top 10% with graduation rates above 95%. Rancho Cucamonga High and the Chaffey District Online High also show strong results, with the online school posting exceptional math scores. In contrast, Valley View High (Continuation) faces significant challenges, including very low proficiency rates and a high dropout rate.

The district graduates students at a rate above the state average, but struggles with chronic absenteeism and mathematics proficiency overall. Schools like Chaffey High, Montclair High, and Ontario High tend to have lower academic performance metrics compared to their district peers. Spending per student varies widely, but higher spending does not consistently correlate with better outcomes in this district.

District Detail

211 West Fifth St.
Ontario, CA 91762-1698

(909) 988-8511

SchoolDigger Rank:
393^rd of 1543 California districts

See the 2025 California District rankings!

Grades served: 9-12
Students: 22,040

Primary Schools: 0
Middle Schools: 0
High Schools: 11
Alternative Schools: 0

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 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
Alta Loma High	Public	9-12	8880 Baseline Rd.	Alta Loma	91701	San Bernardino County	Chaffey Joint Union High	No	(n/a)	No	(n/a)	(909) 989-5511	2,386	96	24.8	60.3%	551 (23.1%)	136 (5.7%)	1,437 (60.2%)	130 (5.4%)	11 (0.5%)	7 (0.3%)	111 (4.7%)	74.1	508^th of 2162 public high schools	76.5%		86	309^th of 2159 public high schools	85.7%	199	27.3	27.5	72.0	72.0	33.3	33.3	$17,837	$922	$16,915
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
Montclair High	Public	9-12	4725 Benito St.	Montclair	91763	San Bernardino County	Chaffey Joint Union High	No	(n/a)	No	(n/a)	(909) 621-6781	2,515	107	23.5	83.3%	97 (3.9%)	47 (1.9%)	2,212 (88.0%)	105 (4.2%)	17 (0.7%)	4 (0.2%)	31 (1.2%)	71.1	577^th of 2162 public high schools	73.3%		66.6	625^th of 2159 public high schools	71.1%	48	27.4	27.4	69.4	69.4	29.9	29.9	$18,215	$1,408	$16,807
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
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
Rancho Cucamonga High	Public	9-12	11801 Lark Dr.	Rancho Cucamonga	91701	San Bernardino County	Chaffey Joint Union High	No	(n/a)	No	(n/a)	(909) 989-1600	3,221	128	25.1	57.4%	637 (19.8%)	442 (13.7%)	1,385 (43.0%)	513 (15.9%)	9 (0.3%)	20 (0.6%)	209 (6.5%)	86.5	273^rd of 2162 public high schools	87.4%		82.1	372^nd of 2159 public high schools	82.8%	99	39.8	39.8	74.7	74.7	43.2	43.2	$16,262	$845	$15,417
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
Etiwanda High	Public	9-12	13500 Victoria St.	Etiwanda	91739	San Bernardino County	Chaffey Joint Union High	No	(n/a)	No	(n/a)	(909) 899-2531	3,446	136	25.3	54.5%	506 (14.7%)	478 (13.9%)	1,787 (51.9%)	461 (13.4%)	12 (0.3%)	10 (0.3%)	187 (5.4%)	89.9	197^th of 2162 public high schools	90.9%		87.4	272^nd of 2159 public high schools	87.4%	75	41.7	41.7	81.0	81.0	46.2	46.2	$16,175	$885	$15,290
Los Osos High	Public	9-12	6001 Milliken Ave.	Rancho Cucamonga	91737	San Bernardino County	Chaffey Joint Union High	No	(n/a)	No	(n/a)	(909) 477-6900	2,759	107	25.7	43.7%	674 (24.4%)	164 (5.9%)	1,142 (41.4%)	633 (22.9%)	7 (0.3%)	3 (0.1%)	135 (4.9%)	89.5	209^th of 2162 public high schools	90.3%		93.4	146^th of 2159 public high schools	93.2%	63	37.9	37.9	79.0	79.0	50.9	50.9	$16,863	$798	$16,065
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
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

Districts nearby

District	Distance	# of Schools	Statewide Rank
Alta Loma Elementary	0.3 mi	10	243^rd
Central Elementary	0.69 mi	7	697^th
Upland Unified	1.61 mi	14	579^th
Cucamonga Elementary	1.87 mi	4	1339^th
Ontario-Montclair	2.39 mi	34	745^th

See the top CA California districts

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.