DECLO SENIOR HIGH SCHOOL
Score 48.6/100: better than 48% of Idaho high schools on 2025-26 state tests. Schools are only compared with others of the same type in the same state. How we score schools
Performance (state tests, 2025-26)
% proficient or advanced on state tests in Idaho, all students. Colored bars are green when the school is at or above the average for similar Idaho schools.
Results over time
How this school's published results have moved year by year.
All 3 published results by grade and test
As published by Idaho State Department of Education. "Hidden" means the state didn't publish the result to protect student privacy.
| Subject | Grade | Test | Result | Students tested |
|---|---|---|---|---|
| English language arts | All grades | ISAT (+ IDAA) | 76.5 | 68 |
| Math | All grades | ISAT (+ IDAA) | 23.5 | 68 |
| Science | All grades | ISAT (+ IDAA) | 35.3 | 68 |
School profile
- Grades
- 9-12
- Students
- 311
- Type
- High school
- Charter school
- No
- Program
- Regular
Students
District and location
Contact
Declo, ID 83323
"Typical" is the middle (median) high school in Idaho. Higher or lower is not in itself better or worse. Address, phone and website are as the state reported them to the U.S. Department of Education for 2024-25, so check with the school before visiting. School details: U.S. Department of Education, Common Core of Data (enrollment 2023-24, lunch eligibility 2024-25).
Nearby high schools
Straight-line distance. Check the district's attendance zones: living close to a school doesn't guarantee a place.
Explore schools around Declo
Location
Official sources
Every figure on this page comes from published government data. Check the originals here; we refresh when states release new results.
U.S. Department of Education, National Center for Education Statistics, Common Core of Data (CCD): school directory, grades served, enrollment and free/reduced-price lunch, 2023-24 and 2024-25. Spotted a mistake? Tell us.
DECLO SENIOR HIGH SCHOOL at a glance
DECLO SENIOR HIGH SCHOOL is a public high school in Declo, Idaho, serving grades 9-12. It is part of Cassia County Joint District. It has about 311 students (a typical Idaho high school has 256). About 37% of students are eligible for free or reduced-price lunch, compared with 37% at a typical Idaho high school, which is useful context when reading test results.
In 2025-26 state tests, 77% in English language arts (similar schools: 61%) and 24% in math (similar schools: 37%) reached the state standard (% proficient or advanced). On our score, which compares it only with other Idaho high schools, it scores 48.6 out of 100: better than 48% of them, ranking #38 of 73. Its English language arts result rose by 15 points from the year before. This overview is generated automatically from published state and federal data; figures are rounded, and you can check the originals via the official sources above.
Page updated 2026-10-12.