Summary:
Zip code 83323 is home to exactly one middle school: Declo Junior High School, serving grades 6 through 8 in Declo, Idaho. With 249 students enrolled, this is the only middle school option in the area, operating under Cassia County Joint District, which ranks 64 of 101 Idaho districts with a 2-star rating. Because there is no other middle school in the zip code, this summary provides a detailed profile of this single school.
Declo Junior High School is a relative academic bright spot within its district, outperforming Cassia County Joint District in most tested subjects despite the district's lower rating. The school holds a 3-star rating and ranks 78 of 174 Idaho middle schools, placing it in the 55th percentile. Math proficiency has exceeded the state average for two consecutive years, reaching 51.5% versus 43.1% statewide in 2025–2026. Sixth graders are especially strong: 63.6% are proficient in math and 67.5% in ELA, both well above state averages. Chronic absenteeism sits at just 7.4%, roughly half the district rate of 12.5% and far below the state's 13.8%, indicating strong attendance and engagement.
Areas of concern include upper-grade ELA, which drops from 67.5% proficiency in 6th grade to 46.8% in 7th grade and 45.1% in 8th grade, falling below state averages in both upper grades. Seventh-grade math (40.5%) also trails the state, and 8th-grade science proficiency (36.6%) is below the state's 42.9%. The school's percentile rank has slipped slightly from 59th to 55th over three years. With roughly 83 students per grade, each proficiency point represents about one student, so grade-level swings should be interpreted cautiously. Data gaps, including unavailable free/reduced lunch figures and spending data from 2018–2019, limit the full picture, but overall this is a solid mid-tier school with strong attendance and math performance.
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