Summary:
Zip code 83336, located in Heyburn, Idaho, is served by a single elementary school, Heyburn Elementary School, which enrolls 508 students in grades PK through 5 within the Minidoka County Joint District. As the only elementary school in the area, Heyburn Elementary stands out for its persistent academic challenges, ranking 328th out of 346 Idaho elementary schools in the 2025–2026 school year — placing it in the bottom 5% with a 0-star rating. The school serves a high-need population, with 66.93% of students qualifying for free or reduced-price lunch.
In terms of academic performance, Heyburn Elementary trails state averages significantly. Math proficiency sits at 28.2%, compared to the state's 43.1%, while English Language Arts proficiency is 35.2% versus the state's 54.0%. Science proficiency among 5th graders is particularly concerning at just 18.6%, a 25-point gap from the state's 44.0%. Grade-level data reveals a severe decline in math: 3rd grade proficiency is 32.4%, 4th grade is 35.2%, but 5th grade plummets to 17.4%. The school's math performance is essentially tied with the district (28.1%), though ELA trails the district by 3.7 points.
Chronic absenteeism is a notable concern, with 18.7% of students missing school regularly, exceeding both the district (14.5%) and state (13.8%) rates. Rankings have also slipped over time, from the 12th percentile in 2024–2025 down to the 5th percentile in 2025–2026. While ELA proficiency improved slightly (33.1% to 35.2%) and math dipped modestly (30.2% to 28.2%), other schools appear to have improved faster. The combination of high poverty, elevated absenteeism, and low test scores — particularly in 5th-grade math and science — suggests Heyburn Elementary would benefit from targeted academic interventions and increased attendance and family engagement supports.
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