Corona-Norco Unified

Corona-Norco Unified includes 51 schools: 33 elementary, eight middle, eight high and two alternative schools, serving students from elementary through high school. The data span 2025–26 test results, earlier results for comparison, and school context. The clearest message for families is that results vary substantially among schools, even within the same school level.

Temescal Valley Elementary led K–6 schools in all three subjects, with 77% proficiency in ELA, 67% in math and 62% in science; its results were 53, 54 and 56 points above Jefferson Elementary, the group’s lowest in each subject. Among middle schools, Dr. Augustine Ramirez Intermediate led in ELA and science, at 69% and 55%, while River Heights Intermediate led in math at 56%; Auburndale Intermediate had the lowest results in all three. At the high-school level, John F. Kennedy Middle College High led in ELA, math and science, with 94%, 58% and 85%; Orange Grove High had the lowest results in each.

Recent changes differed by school level: average results across middle schools rose by about 2 points in each subject from 2024–25 to 2025–26, while high-school averages fell 3 points in ELA, stayed nearly flat in math and rose 2 points in science. Individual schools also moved in different directions: Foothill Elementary gained 8 ELA points, while Corona High fell 13 ELA points but gained 1 science point. SchoolDigger’s statewide percentile rankings rose from 54 to 69 for Foothill and fell from 24 to 7 for Jefferson. For context, 2024–25 free/reduced lunch eligible figures were 64% at Temescal Valley and 94% at Jefferson; these figures do not explain schools’ results. School size and student-teacher ratios also do not neatly sort outcomes: Eleanor Roosevelt High enrolls 4,353 students with a 25.6 student-teacher ratio, while John F. Kennedy enrolls 694 with a 29.0 ratio. Results may be less directly comparable across schools with different grade spans or program models.