Tri-Valley High School - 01
Colton, SD · High School · Grades 9-12
Tri-Valley High School - 01 is a high school in Colton, SD with 276 students enrolled and a 69% proficiency rate. Part of Tri-Valley School District 49-6. NCES data from the U.S. Department of Education.
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About This School
Tri-Valley High School - 01 is a high school located in Colton, South Dakota. The school serves 276 students in grades 9-12. The student-to-teacher ratio is 14.5:1.
According to EDFacts assessment data, 69% of students meet grade-level proficiency standards in combined math and reading. The school reports a 90% graduation rate.
11% of students qualify for free or reduced-price lunch.
Tri-Valley High School - 01 is part of the Tri-Valley School District 49-6 in South Dakota.
How This School Compares
Tri-Valley High School - 01 has 276 students enrolled, making it smaller than the average school in Tri-Valley School District 49-6 (315 students). Its 69% proficiency rate is 2 percentage points above the district average of 67%. Compared to the South Dakota state average of 56%, the school performs 13 points higher. With a 14.5:1 student-teacher ratio, it offers smaller class sizes than the national average.
Frequently Asked Questions
Tri-Valley High School - 01 has 276 students enrolled in grades 9-12. The student-to-teacher ratio is 14.5:1.
According to EDFacts data, 69% of students at Tri-Valley High School - 01 meet grade-level proficiency standards in combined math and reading assessments.
Tri-Valley High School - 01 has a 90% graduation rate, measuring the percentage of students who graduate within four years.
Tri-Valley High School - 01 is part of the Tri-Valley School District 49-6 in Colton, South Dakota. 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.
The this entity record above pulls directly from NCES Common Core of Data and EDFacts. What follows is the per-entity context — how this entity sits in the broader U.S. K-12 school outcomes and enrollment distribution and which underlying factors drive the headline numbers.
The methodology behind every numeric value on this page is publicly documented on the NCES Common Core of Data and EDFacts portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. public schools and districts with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: NCES Common Core of Data, 2026.