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B

Ontario High

PublicHighGrades 9–12

901 West Francis St., Ontario, CA 91762 · (909) 988-7411 · Part of Chaffey Joint Union High School District

Ontario’s School Grade B− better than 51% of California school districts

Directions
Students
1,994
Students per teacher
22:1
Free or reduced lunch
87%
Setting
City
Grades
9–12
The gist

What stands out about Ontario High

  • Its own letter, B: better results than 63% of California’s public schools
  • Reading / language arts 7 pts above the state
  • Larger classes: 22 students per teacher
  • Enrollment down 14.1% since 2020–21

On the path

Where Ontario kids come from and go next. The whole path →

7–89 middle schoolsDepends on your address
9–12Ontario HighYou are here

Test scores

2020–21
Math proficiency29%
State average 33.6%
Reading / language arts56%
State average 48.6%

Its own letter, B, places these results among California’s 3,615 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).

Location

Directions ↗

901 West Francis St., Ontario

Students

Enrollment by grade
Grade 9507
Grade 10507
Grade 11528
Grade 12452
Enrollment over time
2,322’20
2,286’21
2,182’22
2,121’23
1,994’24

Down 14.1% since 2020–21.

Who goes here
Hispanic 89%Asian 3%Black 3%White 2%Two or more races 2%American Indian/Alaska Native <1%Native Hawaiian/Pacific Islander <1%

As reported to NCES, share of students with a reported race or ethnicity.

Parents talk

Questions and answers about Ontario High from Ontario families.

Other schools in Chaffey Joint Union High School District

The district →
Etiwanda High
High · Grades 9–12 · Etiwanda
A−
3,446 students25:1
Rancho Cucamonga High
High · Grades 9–12 · Rancho Cucamonga
A
3,221 students25:1
Chaffey High
High · Grades 9–12 · Ontario
B+
3,127 students23:1
Los Osos High
High · Grades 9–12 · Rancho Cucamonga
A
2,759 students26:1
Montclair High
High · Grades 9–12 · Montclair
A−
2,515 students24:1
Alta Loma High
High · Grades 9–12 · Alta Loma
A
2,386 students25:1

School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against California’s other public schools; Ontario’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.