Declo High School is a public high school in Declo, Idaho. It is the second largest high school operated by the Cassia County Joint School District.
Serving 311 students in grades 9-12, Declo Senior High School ranks in the bottom 50% of all schools in Idaho for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 30-34% (which is lower than the Idaho state average of 42%). The percentage of students achieving proficiency in reading/language arts is 50-54% (which is lower than the Idaho state average of 55%).
The student:teacher ratio of 18:1 is higher than the Idaho state level of 17:1.
Minority enrollment is 20% of the student body (majority Hispanic), which is lower than the Idaho state average of 27% (majority Hispanic).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 311 students
- Student:Teacher Ratio: 18:1
- Minority Enrollment: 20%
- Graduation Rate: ≥95% (Top 5% in ID)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 30-34% (Btm 50%)
- Reading Proficiency: 50-54% (Top 50%)
- Science Proficiency: 20-24% (Btm 50%)
- Source: National Center for Education Statistics (NCES), ID Dept. of Education
Top Rankings
Declo Senior High School ranks among the top 20% of public schools in Idaho for:
Category
Attribute
Graduation Rate
School Overview
Declo Senior High School's student population of 311 students has grown by 6% over five school years.
The teacher population of 17 teachers has declined by 5% over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
311 students
Gender %
Total Classroom Teachers
17 teachers
School Rankings
Declo Senior High School ranks within the bottom 50% of all 709 schools in Idaho (based off of combined math and reading proficiency testing data).
The diversity score of Declo Senior High School is 0.33, which is less than the diversity score at state average of 0.43. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#443 out of 709 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
30-34%
42%
Reading/Language Arts Test Scores (% Proficient)
50-54%
55%
Science Test Scores (% Proficient)
20-24%
41%
Student : Teacher Ratio
18:1
17:1
American Indian
n/a
1%
Asian
1%
1%
Hispanic
18%
20%
Black
n/a
1%
White
80%
73%
Hawaiian
n/a
n/a
Two or more races
1%
4%
All Ethnic Groups
Graduation Rate
≥95%
80%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
14%
26%
Eligible for Reduced Lunch
9%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), ID Dept. of Education
School Notes
- School Mascot: Hornet
Frequently Asked Questions
What is Declo Senior High School's ranking?
Declo Senior High School is ranked #443 out of 709 schools, which ranks it among the bottom 50% of public schools in Idaho.
What percent of students have achieved state testing proficiency in math and reading?
30-34% of students have achieved math proficiency (compared to the 42% ID state average), while 50-54% of students have achieved reading proficiency (compared to the 55% ID state average).
What is the graduation rate of Declo Senior High School?
The graduation rate of Declo Senior High School is 95%, which is higher than the Idaho state average of 80%.
How many students attend Declo Senior High School?
311 students attend Declo Senior High School.
What is the racial composition of the student body?
80% of Declo Senior High School students are White, 18% of students are Hispanic, 1% of students are Asian, and 1% of students are Two or more races.
What is the student:teacher ratio of Declo Senior High School?
Declo Senior High School has a student ration of 18:1, which is higher than the Idaho state average of 17:1.
What grades does Declo Senior High School offer ?
Declo Senior High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Declo Senior High School part of?
Declo Senior High School is part of Cassia County Joint School District.
School Reviews
Review Declo Senior High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
Parents’ Guide to Special Education
Special education law is not easy to decipher, with several regulations that govern special education services for disabled students. In this article, learn about the core components of the laws, rights, and individual education plans that can help create the best public school environment for your child.
Surveillance Cameras: Violation of Rights or Improved Security?
A school district in Virginia has given the green light to schools that want to install surveillance cameras in common areas like cafeterias and hallways. We’ll look at whether this is a violation of student privacy or the best way to keep order in schools.
Teachers in 19 States Allowed to Physically Punish Students
As of 2014, nineteen states still allow corporal punishment – spanking and paddling the most common choices – in their public schools. However, some argue that not only are these punishments physically harmful, they also are disproportionately administered to students of color. As a result, House democrats have taken up the issue in a new bill that would ban all forms of corporal punishment nationwide.
