DECLO SENIOR HIGH SCHOOL

DECLO SENIOR HIGH SCHOOL, a modestly sized secondary school in DECLO, Idaho, one of the schools within CASSIA COUNTY JOINT DISTRICT, hosts 326 students, covering grades 9 through 12. Enrollment runs roughly 28% below the state mean of about 455.

CASSIA COUNTY JOINT DISTRICT comprises 16 schools with combined enrollment of 5,484 students; DECLO SENIOR HIGH SCHOOL is among them.

On demographics, DECLO SENIOR HIGH SCHOOL records that White students make up the majority at 79%. The remainder breaks down as 21% Hispanic. That is meaningfully more White than the county at large, where the share is closer to 69%.

Looking at school resources, Staff filings list 17 full-time-equivalent teachers, which works out to roughly 19.4:1 students per teacher. Statewide, the average ratio sits near 16.0:1, putting DECLO SENIOR HIGH SCHOOL higher than the state norm the norm. An estimated 35% of students are eligible for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. That share is south of Cassia County's rate of about 52%.

In the area at large, ACS estimates for Cassia County put median household earnings sit near $70,830, roughly 21% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 8%. In all, Cassia County runs 17 public schools (combined enrollment of about 5,484 students), of which DECLO SENIOR HIGH SCHOOL is one.

The closest other public school is DECLO JR HIGH SCHOOL, roughly 0.2 miles away. 2 of the 8 nearest public schools sit inside a five-mile radius.

The campus sits in a rural setting.

Five-year trend. DECLO SENIOR HIGH SCHOOL's enrollment has edged up 8% since 2018, when it stood at 302 (now 326). Class-load math has widened: from 16.1:1 in 2018 to 19.4:1 in 2025.

Within the allk12 community for this school, posts here usually surface around sports schedules, lunch menu changes, and school spirit week. Posting is open to anyone connected to the school.