Summary:
Columbia Union has one listed school, Columbia Elementary, which serves kindergarten through grade 8 and enrolls 464 students. Because it is the only school in the area list, families cannot compare its results with another local school in this data. The clearest overall finding is a mixed academic picture: Columbia is above California in science, but substantially below the state in both ELA and math.
Columbia Elementary stands out positively in science and struggles most in math; there are no separate local leaders or trailers to identify. In 2025–2026, science proficiency was 45%, compared with 36% statewide, or 9 points higher. ELA was 33% versus 49% statewide, and math was 21% versus 38%—about 17 points below the state in each subject. Results also differ by grade: grade 4 math was 36%, 6 points below the state, while grade 6 math was 8%, 29 points below. In ELA, grade 5 was 41%, 8 points below its state comparison; grade 3 was 21%, 23 points below.
Recent results show declines in ELA and math alongside a notable science improvement. From 2024–2025 to 2025–2026, Columbia’s ELA and math proficiency each fell by about 9 points, while science rose by about 12 points. SchoolDigger’s school percentile declined from 37th in 2023–2024 to 29th in 2025–2026, and its rating went from 2 stars to 1 star; SchoolDigger rates the district 1 star, ranked 731 of 968 districts, at the 24th percentile. Other context includes a student–teacher ratio of 17.2 in 2024–2025 and 65% free/reduced lunch eligible that year. Chronic absenteeism was 23% in 2025–2026, compared with 18% statewide.
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