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Chaffey Joint Union High Schools
Chaffey Joint Union High is a public school district in California, based in San Bernardino County (Ontario). SchoolGrade grades 11 of its schools on actual versus projected test scores; every school below has its own page.
Chaffey Joint Union High on the map
District boundary from the NCES EDGE composite school district file. Each marker is a graded school; click it for its grade and scores.
SchoolGrade summary for Chaffey Joint Union High
10 of 11 schools in Chaffey Joint Union High carry a SchoolGrade (1 have no school-level proficiency results in our source data). Grade distribution:
A: 4B: 5D: 1
Best schools in Chaffey Joint Union High
Statewide rankings: all 1561 high schools in California · all 1283 middle schools in California · all 5668 elementary schools in California
The ten highest SchoolGrades in the district. Grades reward actual test performance against the projection for each school's student context, so a B in a high-poverty school can outrank an A- elsewhere on impact.
- A Chaffey District Online High (High school, exceeds expectations)
- A Etiwanda High (High school, exceeds expectations)
- A Los Osos High (High school, meets expectations)
- A- Rancho Cucamonga High (High school, exceeds expectations)
- B+ Alta Loma High (High school, meets expectations)
- B+ Montclair High (High school, exceeds expectations)
- B Ontario High (High school, exceeds expectations)
- B- Chaffey High (High school, exceeds expectations)
- B- Colony High (High school, doesn't meet expectations)
- D- Valley View High Continuation (High school, underperforms expectations)
Every school in Chaffey Joint Union High
High schools (10)
- B+ Alta Loma High, Alta Loma
- A Chaffey District Online High, Ontario
- B- Chaffey High, Ontario
- B- Colony High, Ontario
- A Etiwanda High, Etiwanda
- A Los Osos High, Rancho Cucamonga
- B+ Montclair High, Montclair
- B Ontario High, Ontario
- A- Rancho Cucamonga High, Rancho Cucamonga
- D- Valley View High Continuation, Ontario
Other schools and academies (1)
- Chaffey Community Day, Ontario
Where Chaffey Joint Union High schools are
Cities and towns served (4)
- Ontario (6)
- Rancho Cucamonga (2)
- Alta Loma (1)
- Montclair (1)
About this district
- State: Best schools in California
- County: San Bernardino County
- Type: regular local school district
- Setting: large suburb (NCES locale of the district office)
- Enrollment: 22,628 students with 939 full-time-equivalent teachers and 1,972 total staff FTE (NCES CCD, 2023-24)
- NCES district ID: 0608160
- Grades are the 2025-26 SchoolGrade model: each school's actual proficiency against the level projected for its student context. How SchoolGrade works
Nearby school districts
- Alta Loma Elementary (10 schools, 2 mi)
- Central Elementary (7 schools, 2 mi)
- Etiwanda Elementary (17 schools, 4 mi)
- Upland Unified (14 schools, 4 mi)
- Cucamonga Elementary (4 schools, 5 mi)
- Ontario-Montclair (32 schools, 7 mi)
- Fontana Unified (44 schools, 7 mi)
- Rialto Unified (29 schools, 8 mi)
Questions about Chaffey Joint Union High
How many schools are in Chaffey Joint Union High?
SchoolGrade grades 11 public schools in Chaffey Joint Union High, across 4 cities and towns. Every one of them is listed on this page with a link to its own report.
Which cities does Chaffey Joint Union High serve?
The largest by graded schools: Ontario, Rancho Cucamonga, Alta Loma, Montclair.
How good are the schools in Chaffey Joint Union High?
Across the 10 graded schools, the average SchoolGrade is B, with 42% of tested students meeting the state bar against a projected 51.3%. 80% of schools meet or exceed the expectation for their student context.
How many students attend Chaffey Joint Union High?
22,628 students were enrolled in Chaffey Joint Union High in the 2023-24 school year, about 24.1 students per full-time teacher (NCES Common Core of Data).
Where is Chaffey Joint Union High?
Chaffey Joint Union High is in California, based in San Bernardino County, with its district office in Ontario. Its boundary covers about 162 sq mi.