High Schools in Ontario, CA

High schools in Ontario, California on a map, with rankings, graduation rates and multi-year trends.

2012–2026 data · 35,000+ schools · 491 cities · 100% free

Top ranked high schools in Ontario, 2026-27

4 high schools in Ontario are ranked in this edition, ordered by California state rank.

  1. Colony High School — Ontario · #575 in CA · #3,943 nationally
  2. Chaffey District Online High School — Ontario · #586 in CA · #4,015 nationally
  3. Ontario High School — Ontario · #723 in CA · #5,148 nationally
  4. Chaffey High School — Ontario · #912 in CA · #7,074 nationally

Ranks are from the 2026-27 U.S. News & World Report Best High Schools edition. How HighSchoolTrends uses this data.