Summary:
ZIP code 83406, covering the Idaho Falls/Ammon area, contains 9 schools serving approximately 4,816 students — 6 elementary schools, 1 middle school, 1 high school, and 1 alternative K-12 charter — with seven schools belonging to the Bonneville Joint District and two independent charters.
The clear academic leaders are Rimrock Elementary and Woodland Hills Elementary. Rimrock ranks in the 88th percentile statewide (4 stars) with 65.2% math and 71.1% ELA proficiency — far above district averages of 41.4% and 54.9% — while also posting the area's lowest chronic absenteeism (7.9%) and free/reduced lunch rate (13.7%). Woodland Hills follows closely at the 84th percentile and has the ZIP code's highest 5th-grade science proficiency (63.8%). At the other end, Mountain Valley Elementary (23rd percentile), Ammon Elementary (30th percentile), Monticello Montessori Charter School (22nd percentile), and Hillview Elementary (39th percentile) lag behind, with Ammon's ELA proficiency at just 37.7% and Hillview's chronic absenteeism at 21.7%.
Among secondary schools, Hillcrest High School improved dramatically from the 13th to 57th percentile in one year, with strong end-of-course ELA scores (69.8% vs. 61.3% state), though its graduation rate remains average at 82.5%. White Pine Charter School impresses in science (51.9% proficiency) despite a 47.9% free/reduced lunch rate. Notably, the top-performing elementaries spend the least per student (~$5,700), while Sandcreek Middle School (41st percentile, 20.8% absenteeism) and Hillview show higher spending and smaller class sizes don't guarantee better outcomes. Poverty and attendance clearly correlate with performance, making Rimrock and Woodland Hills the standout choices for cost-effective education, while Hillview and Sandcreek appear to need targeted attendance and academic interventions.
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