Best High Schools in Zip Code 80422

There is just one high school serving zip code 80422: Gilpin County Undivided High School in Black Hawk, Colorado, part of the Gilpin County School District No. Re-1. This small school enrolls 200 students and serves grades 6 through 12, making it a combined middle and high school where CMAS test scores include students as young as 6th grade.

Parents should know that this school posts some very impressive results. The graduation rate sits at 97.3%, well above the state average of 85.6%. In science, 42.1% of 11th graders scored proficient on the CMAS assessment, compared with just 24.8% statewide. SAT Reading and Writing results are also strong, with 78% proficient versus 60% statewide. These strengths helped the school jump from 123rd to 80th in Colorado's state rankings out of 338 schools, moving from the 62nd to the 76th percentile in just one year.

However, there are clear challenges. Math proficiency trails the state across most assessments; on the 2025-2026 CMAS All Grades test, only 27.5% of students were proficient versus 37.3% statewide. Chronic absenteeism is also a major concern, with 42.2% of students chronically absent, far above the state rate of 28.4% — an especially surprising finding given the high graduation rate. Because the school is small, year-to-year test scores can swing significantly with just a few students. Since this is the only school in the district, school and district results are essentially identical, so the district's strong reputation is driven entirely by Gilpin County Undivided High School's performance.