Marsh Valley High School is a public high school in the Marsh Valley in Bannock County, Idaho, United States, just north of Arimo. The school is part of the Marsh Valley School Joint District#21. The school's address is 12805 S Old Highway 91 Arimo, Idaho 83214-1613.
Serving 303 students in grades 9-12, Marsh Valley High School ranks in the top 30% of all schools in Idaho for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 40-44% (which is approximately equal to the Idaho state average of 41%). The percentage of students achieving proficiency in reading/language arts is 70-74% (which is higher than the Idaho state average of 55%).
The student-teacher ratio of 16:1 is lower than the Idaho state level of 17:1.
Minority enrollment is 5% of the student body (majority Hispanic), which is lower than the Idaho state average of 28% (majority Hispanic).
Quick Facts (2026-27)
- Grades: 9-12
- Enrollment: 303 students
- Student-Teacher Ratio: 16:1
- Minority Enrollment: 5%
- Graduation Rate: 75-79% (Btm 50% in ID)
- Overall Testing Rank: Top 30%
- Math Proficiency: 40-44% (Top 50%)
- Reading Proficiency: 70-74% (Top 20%)
- Science Proficiency: 45-49% (Top 50%)
- Attendance Zone: Marsh Valley High School's attendance zone covers the entire district of Arimo, ID, encompassing approximately 785.7 square miles. The typical drive to the school ranges from 20 to 30 minutes, with an average distance of 16 miles to the edge of the zone and a maximum distance of 25.6 miles to its furthest point.
- Source: National Center for Education Statistics (NCES), ID Dept. of Education
Top Rankings
Marsh Valley High School ranks among the top 20% of public schools in Idaho for:
Category
Attribute
Reading/Language Arts Proficiency
School Overview
Marsh Valley High School's student population of 303 students has declined by 24% over five school years.
The teacher population of 19 teachers has declined by 13% over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
303 students
Total Classroom Teachers
19 teachers
School Calendar
School Motto
Alone, we can do so little; together, we can do so much.
School Rankings
Marsh Valley High School ranks within the top 30% of all 704 schools in Idaho (based off of combined math and reading proficiency testing data).
The diversity score of Marsh Valley High School is 0.10, which is less than the diversity score at state average of 0.44. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#166 out of 704 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
40-44%
41%
Reading/Language Arts Test Scores (% Proficient)
70-74%
55%
Science Test Scores (% Proficient)
45-49%
41%
Student-Teacher Ratio
16:1
17:1
American Indian
1%
1%
Asian
n/a
1%
Hispanic
4%
21%
Black
n/a
1%
White
95%
72%
Hawaiian
n/a
n/a
Two or more races
n/a
4%
All Ethnic Groups
Graduation Rate
75-79%
80%
Chronically Absent Students
(22-23)26.7%
16.9%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
17%
32%
Eligible for Reduced Lunch
6%
7%
School Statewide Testing
School District Name
Sports
Colors
White, Red, Scarlet, Columbia blue
School Mascot
Eagles
Source: National Center for Education Statistics (NCES), ID Dept. of Education
Frequently Asked Questions
What is Marsh Valley High School's ranking?
Marsh Valley High School is ranked #166 out of 704 schools, which ranks it among the top 30% of public schools in Idaho.
What schools are Marsh Valley High School often compared to?
Marsh Valley High Schoolis often viewed alongside schools like Century High School, Highland High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
40-44% of students have achieved math proficiency (compared to the 41% ID state average), while 70-74% of students have achieved reading proficiency (compared to the 55% ID state average).
What is the graduation rate of Marsh Valley High School?
The graduation rate of Marsh Valley High School is 75-79%, which is lower than the Idaho state average of 80%.
How many students attend Marsh Valley High School?
303 students attend Marsh Valley High School.
What is the racial composition of the student body?
95% of Marsh Valley High School students are White, 4% of students are Hispanic, and 1% of students are American Indian.
What is the student-teacher ratio of Marsh Valley High School?
Marsh Valley High School has a student ration of 16:1, which is lower than the Idaho state average of 17:1.
What grades does Marsh Valley High School offer ?
Marsh Valley High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Marsh Valley High School part of?
Marsh Valley High School is part of Marsh Valley Joint School District.
School Reviews
5 10/10/2025
This School is amazing! Recommend the school to everyone in the area. I have a great education.
5 10/10/2025
There aren''t very many classes to choose from, anybody can see that. But the atmosphere is the best thing.
Review Marsh Valley High School. Reviews should be a few sentences in length. Please include any comments on:
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