Summary:
Zip code 66427 has one listed high school, Frankfort High, which serves grades 7–12 and enrolls 117 students. Its 2025–26 all-grades proficiency was above the state in ELA, math, and science, with the largest advantage in math.
Because it is the only school listed, Frankfort High is not a top or bottom performer compared with local peers. It stands out positively against state results: proficiency was 57% in ELA, 57% in math, and 41% in science, compared with 46%, 41%, and 38% statewide. Those differences are 11, 16, and 3 percentage points, respectively. The school was below the Vermillion district average in all three subjects, though math was nearly even: 56.6% versus 56.7%. Its 2023–24 graduation rate was 100%, compared with 90% statewide, and its 2025–26 chronic absenteeism rate was 8%, 10 points lower than the state rate.
Test results improved from 2024–25 to 2025–26, and the school gained ground on the state in every subject. ELA rose by 11 percentage points, math by 8, and science by 2; the state gaps shifted from 1 point to 11 in ELA, from 10 to 16 in math, and from 3 points below to 3 above in science. Grade-level results are uneven: 7th-grade ELA and math were 42 and 34 points above the state, while 10th-grade ELA was 1 point below. At the same time, SchoolDigger’s ranking fell from the 91st percentile in 2023–24 to the 70th percentile in 2025–26 (101st of 340 schools), a different signal from the latest test-score gains. The reported student–teacher ratio was 8.3, and the free/reduced-lunch rate was 27%; these are context, not explanations for results. With only one school listed, area-wide school-to-school comparisons are not possible.
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