Summary
Union Colony Preparatory School is a small public school in Greeley, Colorado, serving 333 students in grades 6–12 within the Greeley School District No. 6. This compact 6–12 preparatory school stands out in a district where most high schools are large and underperforming, earning a 3-star rating and ranking in the 53rd percentile statewide for 2025–2026. That makes it the second-highest-ranked high school in the district, trailing only Early College Academy, and well ahead of nearby comprehensive schools like Greeley Central High School, Greeley West High School, and Northridge High School, which all sit in the bottom 25th percentile.
Academically, the school presents a mixed picture. Its middle school test scores on state CMAS assessments are below district and state averages, with math proficiency around 12% compared to 37% statewide. However, by high school, students show strong growth: SAT Reading proficiency matches the state average at 60%, far exceeding the district's 43%, and well above other Greeley high schools. SAT Math proficiency (26%) also outpaces every large district high school, though it remains below the state's 32%. Math is the school's clearest weakness, with scores declining steadily and science proficiency also lagging, but the high school gains suggest effective interventions and a curriculum aligned with college-prep assessments.
Where Union Colony truly shines is in keeping students engaged and graduating them. Its graduation rate is 94.1%, roughly 10 points above the state average, and dropout rates have been near zero in recent years. Chronic absenteeism sits at 22.8%, dramatically lower than district peers like Jefferson Junior/Senior High, which hovers near 84%, and far better than Greeley Central, West, or Northridge. The school is also notably effective with students facing economic challenges and Hispanic students, achieving high subgroup rankings statewide. For parents looking for a small, supportive environment in Greeley, Union Colony is an outlier for all the right reasons—strong engagement, impressive graduation outcomes, and solid high school reading performance, even as middle school math remains a clear area to watch.
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