Summary:
Delta, Utah, has one public high school, Delta High, serving grades 9–12 in the Millard District area. The school enrolls 592 students and offers a small-community high school setting, with a 21.8-to-1 student–teacher ratio.
Delta High has shown notable recent improvement. Its statewide ranking rose from 72nd of 138 schools in 2024–2025 to 23rd of 139 schools in 2025–2026, moving from the 48th to the 83rd percentile and from a two-star to a four-star rating. Test results also improved broadly: average proficiency increased by about 11 percentage points across English language arts, mathematics, and science. The strongest current result is 10th-grade English language arts, with 66.1% of students proficient. Science is another relative strength, while mathematics—especially 10th grade at 39.3% proficient—remains the clearest academic area for continued improvement. Even so, Delta High exceeded Utah’s average in every reported subject and grade.
Parents may also find the school’s student-outcome measures encouraging. In 2024–2025, the graduation rate was 92.8%, above Utah’s 89.8% statewide rate, although below the Millard District rate of 95.4%. The dropout rate was 4.0%, better than the state’s 8.5% but slightly higher than the district’s 2.8%. Attendance is a particular strength: chronic absenteeism was 6.6%, compared with 13.7% in the district and 23.8% statewide. Overall, Delta High combines strong attendance and graduation outcomes with substantially improved academic performance, while mathematics and maintaining the latest gains are the main areas to watch.
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