Ontario High

6/10 High School Chaffey Joint Union High School DistrictCentral North, Rancho Cucamonga

Ontario High is a high school located in Central North, Rancho Cucamonga, CA. It is part of Chaffey Joint Union High School District, serving grades 9–12, with a district rating of 7/10.

This school is a part of Chaffey Joint Union High School District

Chaffey Joint Union High School District is a solid and stable high-performing organization, currently ranked as the premier district in San Bernardino County. With a portfolio of high schools that largely range from 6/10 to 9/10, the district demonstrates consistent academic success, particularly in English Language Arts and college readiness. While math proficiency remains a strategic area for growth and anecdotal reports suggest minor social-environment concerns on campus, the district's proactive leadership, diverse extracurricular offerings, and strong financial footing—highlighted by recent facility upgrades and successful community engagement initiatives—solidify its status as a top-tier educational provider.

Grades 9–12

Ontario High

Students
Teachers
Ratio
⚠worse than state average

Ethnicity

Hispanic
Asian
White
Other
Gender
Male Female

See what's really behind the Ontario High rating.

  • Enrollment & class size — ratio vs. state average
  • Full demographics — ethnicity & gender for this school
  • State benchmark — above or below CA average?
  • All schools in Chaffey Joint Union High School District — ranked side by side

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Other Schools in Chaffey Joint Union High School District

9/ 10
Los Osos High
High
9/ 10
Chaffey District Online High
High
9/ 10
Etiwanda High
High
8/ 10
Rancho Cucamonga High
High
8/ 10
Alta Loma High
High
7/ 10
Montclair High
High
6/ 10
Chaffey High
High
6/ 10
Colony High
High
2/ 10
Valley View High (Continuation)
High
1/ 10
Chaffey Community Day
High