Schools in Zip Code 80736

Zip code 80736 in Iliff, Colorado is served by two small public schools — Caliche Elementary School (grades PK–6, 139 students) and Caliche Junior-Senior High School (grades 7–12, 104 students) — both part of School District No. Re-1 Valley, a rural district ranked 73rd out of 115 Colorado districts with a 2-star rating.

Caliche Elementary School stands out as the stronger CMAS performer, posting 38.2% proficiency in English Language Arts and 25.0% in Math — well above the district's 29.2% and 21.3% respectively — though still below state averages. Its state ranking has been volatile, swinging from the 9th percentile in 2023–2024 to the 55th percentile in 2024–2025, then settling at the 33rd percentile in 2025–2026, illustrating how much a few students can shift results in a small school. Caliche Junior-Senior High School, meanwhile, excels on college-readiness assessments: its PSAT 9 Math proficiency of 45% in 2024–2025 was more than double the district's 21%, and its 2025–2026 PSAT 9 Math score of 42% exceeded both district (30%) and state (40%) averages. The high school also has the area's lowest chronic absenteeism rate at 13.6%, compared to 17.5% at the elementary school, 22.9% district-wide, and 28.4% statewide.

Both schools serve economically diverse populations, with 48.9% of elementary and 42.3% of high school students qualifying for free/reduced lunch. They maintain favorable student-teacher ratios of 13.3-to-1 at the elementary level and a notably low 9.1-to-1 at the high school. Caliche Junior-Senior High School reports an 89.5% graduation rate, above the state's 85.6%, and a low 0.7% dropout rate. While the district overall trails Colorado state averages on CMAS testing, these two schools offer clear bright spots — the elementary school's district-leading test scores and the high school's standout PSAT performance and strong attendance.