Summary
Lyndon High serves 124 students in grades 9–12 in Lyndon, Kansas, and its results are mixed: English language arts (ELA) and math are near nearby-school averages, but science stands out as a major weakness. In 2025–26, 21% of students were proficient in science, compared with 38% statewide and 41% in the Lyndon district; the result was also 11 points below the nearby-school average and lower than all three nearby high-school-only comparisons. Science is the school’s clearest concern.
ELA and math are much more competitive. ELA proficiency was 39%, about level with the nearby all-grades average, though 7 points below the state and 14 below the district. Math was 39%—slightly above the nearby average, 2 points below the state, and 4 above the district. Among nearby high schools, ELA was higher than at West Franklin High School, Santa Fe Trail High and Osage City High. Math was higher than at the first two, but below Osage City. Some nearby schools serve grades 6–12, so all-grades comparisons are not perfectly like-for-like.
ELA and math have improved since 2022–23, rising 12 and 9 percentage points, respectively, but the state improved slightly more in both subjects. Science moved the other way, falling 18 points from 2022–23 to 2025–26 as the state’s result rose; the gap shifted from 8 points above the state to 18 below. SchoolDigger rates Lyndon at the 41st percentile and 2 stars, down from the 85th percentile in 2020–21. Its student-teacher ratio, 12.4, is higher than the reported nearby range of 8.7–11.8, while its free/reduced-lunch rate, 31%, is the lowest among nearby schools. SchoolDigger’s subgroup rankings also differ: the female-student percentile is 61, above the overall 41 despite falling from 93 in 2020–21, while the low-socioeconomic-status percentile rose from 18 in 2023–24 to 52 in 2025–26, indicating a stronger standing in how the school serves that group.
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