Summary:
Schools in zip code 83336 (Heyburn, Idaho) include two schools within the Minidoka County Joint District: Heyburn Elementary School serving grades PK-5 and Mt Harrison High School serving grades 9-12, with a combined enrollment of 630 students. There are no middle schools in this zip code, so students in grades 6-8 attend school outside the area. Both schools serve high-poverty populations, with roughly two-thirds of students at each school qualifying for free or reduced lunch. The district is currently ranked 94 out of 101 districts in Idaho with a 0-star rating.
Heyburn Elementary School is the academic standout in the area. While its statewide rank of 328 out of 346 places it in the 5th percentile, it is the only school in the zip code with detailed test score data. All-grade math proficiency of 28.2% matches the district average, and 4th grade math and ELA scores both exceed district averages. ELA proficiency improves steadily from 3rd grade (31.4%) to 5th grade (37.2%). However, 5th grade math drops sharply to 17.4%, and 5th grade science is just 18.6%, well below state averages. Mt Harrison High School, in contrast, is ranked 109 out of 110 schools statewide and faces significant challenges, including a chronic absenteeism rate of 41.8%—nearly three times the state rate.
Despite spending 46% more per student than the elementary school ($10,010 vs. $6,843) and having a much lower student-teacher ratio (11.6 vs. 20.1), Mt Harrison High School's academic rankings remain very low. The graduation rate of 82.5% does match state and district averages, which is a positive sign. Chronic absenteeism is a serious concern at both schools, with the elementary at 18.7% and the high school at 41.8%. Parents should note that some data is limited or older—spending figures are from 2018-2019, and Mt Harrison has no recent ISAT proficiency data—so the full academic picture is incomplete.
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