Chaffey Joint Union High, CA

Original Research by School Decision on Chaffey Joint Union High

Chaffey Joint Union High School District serves grades nine through twelve across a broad area of San Bernardino County that includes Rancho Cucamonga, Ontario, Fontana, Montclair, Lytle Creek, Upland, Pomona, Chino, and Eastvale. The district operates eleven high schools, including six traditional comprehensive high schools, two schools focused on alternative pathways, one online option, and one community day school.

The district's student population is large and diverse. Hispanic students make up the majority of enrollment, while Asian, White, and Black students form substantial secondary populations. The enrollment spans all four high school grades fairly evenly. Data on free-or-reduced-price lunch eligibility and counts of English learners or students with individualized education plans were not available in the district's reported figures, so a parent seeking those specifics would need to contact the district directly.

The English language arts proficiency rate across all grades sits solidly above halfway, indicating that the majority of students are meeting grade-level standards in reading and writing. Mathematics and science proficiency rates are substantially lower, with math proficiency at about one-third and science proficiency at roughly one-third. This gap between humanities and STEM performance is not uncommon in California districts, but it reflects an area where students are struggling. A parent interested in understanding whether additional math or science support exists at the school their student would attend should ask the district about tutoring, intervention programs, or summer bridge offerings.

The district reports introducing AP African American Studies as a new course offering, anchored primarily at Etiwanda High School, which serves the district's largest African American student population. This addition aligns with the district's stated college-and-career-readiness strategy and was designed to draw in students new to Advanced Placement coursework. The district also references California's forthcoming ethnic studies graduation requirement, publicly reported as set to begin with the class of 2030, though state funding for the mandate was not included in the 2025-26 budget, so the timeline remains uncertain.

Among San Bernardino County's districts, Chaffey's chronic absenteeism rate is above the county's midpoint, meaning fewer students are classified as chronically absent compared to half the districts in the county; this is a strength. Per-pupil current spending sits in the county's middle range, upper half, indicating resources comparable to or slightly above many neighboring districts.

The housing market across the district's service area is mixed. The weighted median home value spans a broad range, with some communities in the district's footprint significantly more affordable than others. Rancho Cucamonga, a major presence in the district's area, commands higher prices, while Lytle Creek and lower-cost parts of Fontana and Ontario are more affordable. Rental costs have risen modestly year-over-year. Housing as a share of household income is notably higher than the national benchmark, placing affordability pressure on renters in this region.

The district's schools serve communities that are growing and economically mixed. Unemployment in the area is in the moderate range, and median household income is above state averages, though the cost of living, particularly housing, reduces purchasing power. Families considering a Chaffey school should understand that test results show strength in reading and writing but meaningful challenges in mathematics and science, and should ask each school specifically about supports available in those areas.

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District Context

Officially reported figures, 2024-25.

Enrollment

22,628

Grades

09–12

Schools

Student body

Hispanic 65%

Black 8%

White 13%

Asian 10%

Two+ 4%

Am. Indian / AK Native 0%

Hawaiian / Pac. Isl. 0%

By economic status

Percent proficient by grade, as reported

Economically disadvantaged

Not disadvantaged

ELA

Gr ALL

64%

—

Gr 11

64%

—

Math

Gr ALL

29%

—

Gr 11

29%

—

Science

Gr ALL

26%

—

Gr 12

26%

—

Gr HS

26%

—

Gr UG_SEC

26%

—

Schools in this District

11 schools are officially reported under this district.

Valley View High (Continuation)

Rancho Cucamonga High

Chaffey Community Day

Etiwanda High

Los Osos High

Colony High

Chaffey District Online High

Housing & Real Estate

Data as of April 2026 | District-weighted from constituent ZIP codes

Home Values

Typical home value$678,090

Year-over-year change-1.1%

Range across 18 ZIP codes$364K to $984K

vs. state typical0.87x

vs. national typical1.84x

Home value trend (12 months)

ZIP code home values (18 ZIP codes)

ZIP	City	Value	YoY	Weight
92358	Lytle Creek	$408K	+0.5%	19.0%
91739	Rancho Cucamonga	$981K	+0.8%	17.2%
91761	Ontario	$692K	-2.3%	15.2%
91730	Rancho Cucamonga	$680K	-1.1%	8.5%
91759	Lytle Creek	$364K	-8.3%	8.3%
91762	Ontario	$685K	-0.8%	6.4%
91737	Rancho Cucamonga	$956K	+1.6%	6.2%
91764	Ontario	$634K	-1.1%	4.9%
91701	Rancho Cucamonga	$843K	-1.1%	4.5%
92336	Fontana	$708K	-1.6%	4.3%

Showing top 10 of 18 ZIP codes by land area weight

Rental Market

Typical monthly rent$2,788/mo

Year-over-year change+1.5%

Range across 16 ZIP codes$2,331 to $3,955/mo

Rent trend (12 months)

ZIP code rents (16 ZIP codes)

ZIP	City	Rent/mo	YoY	Weight
91739	Rancho Cucamonga	$2,743	-0.5%	17.2%
91761	Ontario	$2,797	+3.5%	15.2%
91730	Rancho Cucamonga	$2,820	-1.3%	8.5%
91762	Ontario	$2,538	+4.0%	6.4%
91737	Rancho Cucamonga	$3,068	+2.0%	6.2%
91764	Ontario	$2,531	-0.3%	4.9%
91701	Rancho Cucamonga	$2,673	+4.0%	4.5%
92336	Fontana	$3,415	+2.1%	4.3%
91763	Montclair	$2,565	+3.4%	3.3%
92337	Fontana	$3,501	—	0.8%

Showing top 10 of 16 ZIP codes by land area weight

Affordability

Est. monthly mortgage (20% down at 6.48%)$3,422/mo

Home price / national median income8.1x

Annual rent / national median income40.0%

Est. mortgage exceeds rent by$633/mo

Comparison

State typical home value$776,233 (-1.1% YoY)

National typical home value$368,198 (+0.6% YoY)

State ZHVI trend (12 months)

National ZHVI trend (12 months)

Economic Context

30-year fixed mortgage rate6.48%

National unemployment rate4.3%

National median household income$83,730

CPI: Rent of shelter (index)447.05

30-year fixed mortgage rate (12 months)

National unemployment rate (12 months)

National median household income (12 months)

CPI: Rent of shelter (index) (12 months)

Sources: Zillow Home Value Index and Zillow Observed Rent Index (Zillow Group), Realtor.com via Federal Reserve Bank of St. Louis (FRED)

Data Currently Unavailable

Academic Performance
Civil Rights Data (CRDC)

This profile is derived exclusively from publicly available federal and state datasets. It may not reflect the most current information available. We encourage parents and families to supplement this data with information published directly on the school’s website, which may include more recent figures, additional programs, or updated enrollment data.