Grass Ranch Colony High School - 15 serves 14 students in grades 9-12.
The percentage of students achieving proficiency in math is ≥50% (which is lower than the South Dakota state average of 75%). The percentage of students achieving proficiency in reading/language arts is ≥50% (which is lower than the South Dakota state average of 75%).
The student-teacher ratio of 14:1 is higher than the South Dakota state level of 12:1.
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 14 students
- Student-Teacher Ratio: 14:1
- Math Proficiency: ≥50% (Top 1% in SD)
- Reading Proficiency: ≥50% (Top 1%)
- Source: National Center for Education Statistics (NCES), SD Dept. of Education
Top Rankings
Grass Ranch Colony High School - 15 ranks among the top 20% of public schools in South Dakota for:
Category
Attribute
Percent Eligible For Free Lunch
Community Size
School Overview
Grass Ranch Colony High School - 15's student population of 14 students has grown by 40% over five school years.
The teacher population of 1 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
14 students
Gender %
Total Classroom Teachers
1 teacher
School Rankings
The diversity score of Grass Ranch Colony High School - 15 is 0.00, which is less than the diversity score at state average of 0.53. The school's diversity has stayed relatively flat over five school years.
Math Test Scores (% Proficient)
(11-12)≥50%
75%
Reading/Language Arts Test Scores (% Proficient)
(11-12)≥50%
75%
Student-Teacher Ratio
14:1
12:1
American Indian
n/a
14%
Asian
n/a
2%
Hispanic
n/a
8%
Black
n/a
3%
White
100%
67%
Hawaiian
n/a
n/a
Two or more races
n/a
6%
All Ethnic Groups
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
64%
31%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), SD Dept. of Education
Frequently Asked Questions
What percent of students have achieved state testing proficiency in math and reading?
≥50% of students have achieved math proficiency (compared to the 75% SD state average), while ≥50% of students have achieved reading proficiency (compared to the 75% SD state average).
How many students attend Grass Ranch Colony High School - 15?
14 students attend Grass Ranch Colony High School - 15.
What is the racial composition of the student body?
100% of Grass Ranch Colony High School - 15 students are White.
What is the student-teacher ratio of Grass Ranch Colony High School - 15?
Grass Ranch Colony High School - 15 has a student ration of 14:1, which is higher than the South Dakota state average of 12:1.
What grades does Grass Ranch Colony High School - 15 offer ?
Grass Ranch Colony High School - 15 offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Grass Ranch Colony High School - 15 part of?
Grass Ranch Colony High School - 15 is part of Kimball School District 07-2.
School Reviews
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