Rock Canyon High School
Highlands Ranch, CO · High School · Grades 9-12
Rock Canyon High School is a high school in Highlands Ranch, CO with 2,377 students enrolled and a 55% proficiency rate. Part of Douglas County School District No. Re 1. NCES data from the U.S. Department of Education.
Rock Canyon High School is a high school in Highlands Ranch, CO that enrolls 2,377 students in grades 9-12, putting it among the larger public campuses in the Douglas County School District No. Re 1. That headcount is above the 708-student average for schools in the district.
EDFacts assessment data puts 55% of students at or above grade level in combined math and reading, a little above the national midpoint where roughly half of tested students clear the bar. That is 7 points below the 62% average for the Douglas County School District No. Re 1. Against the 51% Colorado statewide average, the school sits 4 points higher.
Over the last three reported years the district proficiency rate this school inherits has fallen by about 6 points. As a high school, it reports a 74% adjusted-cohort graduation rate, the share of first-time ninth-graders who earn a regular diploma within four years.
The student-teacher ratio is 21.6 to 1, above the U.S. average of roughly 16 to 1.
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About This School
Rock Canyon High School is a high school located in Highlands Ranch, Colorado. The school serves 2,377 students in grades 9-12. The student-to-teacher ratio is 21.6:1.
According to EDFacts assessment data, 55% of students meet grade-level proficiency standards in combined math and reading. The school reports a 74% graduation rate.
Rock Canyon High School is part of the Douglas County School District No. Re 1 in Colorado.
How This School Compares
Rock Canyon High School has 2,377 students enrolled, making it larger than the average school in Douglas County School District No. Re 1 (708 students). Its 55% proficiency rate is 7 percentage points below the district average of 62%. Compared to the Colorado state average of 51%, the school performs 4 points higher. The 21.6:1 student-teacher ratio is above the national average of 16:1.
Other Schools in Douglas County School District No. Re 1
Frequently Asked Questions
Rock Canyon High School has 2,377 students enrolled in grades 9-12. The student-to-teacher ratio is 21.6:1.
According to EDFacts data, 55% of students at Rock Canyon High School meet grade-level proficiency standards in combined math and reading assessments.
Rock Canyon High School has a 74% graduation rate, measuring the percentage of students who graduate within four years.
Rock Canyon High School is part of the Douglas County School District No. Re 1 in Highlands Ranch, Colorado. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
Source: NCES Common Core of Data, 2026.