Ralston Valley Senior High School
Arvada, CO · High School · Grades 9-12
Ralston Valley Senior High School is a high school in Arvada, CO with 1,843 students enrolled and a 72% proficiency rate. Part of Jefferson County School District No. R-1. NCES data from the U.S. Department of Education.
Ralston Valley Senior High School is a high school in Arvada, CO, enrolling 1,843 students in grades 9-12 within the Jefferson County School District No. R-1. That headcount is above the 465-student average for schools in the district.
On the latest EDFacts assessments, 72% of students reached grade-level proficiency in combined math and reading — a rate near the top of the national distribution. That is 18 points above the 54% average for the Jefferson County School District No. R-1. Against the 51% Colorado statewide average, the school sits 21 points higher.
Over the last three reported years the district proficiency rate this school inherits has risen by about 21 points. As a high school, it reports a 91% adjusted-cohort graduation rate, the share of first-time ninth-graders who earn a regular diploma within four years.
The student-teacher ratio is 21.2 to 1, above the U.S. average of roughly 16 to 1. A relatively low 11% of students qualify for free or reduced-price lunch.
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About This School
Ralston Valley Senior High School is a high school located in Arvada, Colorado. The school serves 1,843 students in grades 9-12. The student-to-teacher ratio is 21.2:1.
According to EDFacts assessment data, 72% of students meet grade-level proficiency standards in combined math and reading. The school reports a 91% graduation rate.
11% of students qualify for free or reduced-price lunch.
Ralston Valley Senior High School is part of the Jefferson County School District No. R-1 in Colorado.
How This School Compares
Ralston Valley Senior High School has 1,843 students enrolled, making it larger than the average school in Jefferson County School District No. R-1 (465 students). Its 72% proficiency rate is 18 percentage points above the district average of 54%. Compared to the Colorado state average of 51%, the school performs 21 points higher. The 21.2:1 student-teacher ratio is above the national average of 16:1.
Other Schools in Jefferson County School District No. R-1
Frequently Asked Questions
Ralston Valley Senior High School has 1,843 students enrolled in grades 9-12. The student-to-teacher ratio is 21.2:1.
According to EDFacts data, 72% of students at Ralston Valley Senior High School meet grade-level proficiency standards in combined math and reading assessments.
Ralston Valley Senior High School has a 91% graduation rate, measuring the percentage of students who graduate within four years.
Ralston Valley Senior High School is part of the Jefferson County School District No. R-1 in Arvada, 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.