Schools & Families in Rancho Cucamonga

Rancho Cucamonga's school-district performance runs genuinely stronger than neighboring Ontario's, anchored by the Chaffey Joint Union High School District's above-average graduation rate and a #1-in-county-ranked high school.

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A real, genuinely strong graduation rate

The Chaffey Joint Union High School District, serving Rancho Cucamonga, reports a 94.2% graduation rate, significantly above California's statewide average of approximately 87.3% -- a real, genuinely strong outcome.

Rancho Cucamonga High School: #1 in San Bernardino County

Rancho Cucamonga High School ranks #1 Best Public High School in San Bernardino County per Niche, though it ranks 341st statewide within California -- both figures disclosed honestly rather than only citing the more flattering county-level ranking.

Elementary and middle schools rate genuinely well

Elementary and middle schools across Rancho Cucamonga commonly earn 8-10 out of 10 ratings per the cited sourcing -- a real, genuinely stronger district-wide profile than neighboring Ontario's C- average SchoolGrade.

A real family-suburb demographic profile

Rancho Cucamonga's senior (65+) population share (11.9%-14.5% across sources) runs below the ~16.84% national baseline, while its median age of 38.6 reflects a real, family-formation-stage community distinct from a retirement-oriented market.

Key takeaways

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Last reviewed: 2026-08-25. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.