Summary:
Zip code 83236 contains exactly one middle school—Firth Middle School—serving grades 5 through 8 with 247 students in the small Idaho community of Firth. Because there are no other middle schools in this zip code for direct comparison, the best way to evaluate Firth Middle is against state averages and the performance of its own district, Firth District, which ranks 23rd out of 101 Idaho districts (77th percentile, 4 stars).
Firth Middle's clear academic strength is English Language Arts, where 59.3% of students are proficient, exceeding the state rate of 54.0%. The school beats the state in ELA at every grade level, and 8th graders are especially strong at 65.6% proficiency—11.1 percentage points above the state average. Math results are more uneven: 6th graders outperform the state by 8.4 points, but 7th graders trail by 7.1 points, and 8th graders are slightly below average. Science is similarly split, with 5th graders well below the state (-10.7 points) while 8th graders score a solid 7.9 points above. This grade-level variability suggests specific curricular areas that may need attention even as overall performance sits near the middle of the pack.
The school also posts a low chronic absenteeism rate of 7.1%, roughly half the Idaho average of 13.8%, although the district's rate of 4.8% shows room for improvement. Perhaps most notably, Firth Middle has shown dramatic improvement over time, climbing from the bottom 4% of Idaho middle schools in 2017–2018 to the 59th percentile in 2025–2026, with its star rating rising from 0 to 3 stars. With about 39% of students eligible for free or reduced-price lunch, the school's above-average ELA scores are a positive sign, and its strong district context and upward trajectory suggest a school moving in the right direction.
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