Summary:
ZIP code 66048 has one high school, Leavenworth Senior High, serving grades 9–12 with 1,237 students; because it is the only school listed, there is no local school-to-school comparison. The most important finding is that its 2025–26 proficiency was below Kansas in all three tested subjects, with the largest gap in science.
ELA is the school’s closest subject to the state, while science is its weakest relative result: proficiency was 38% in ELA, 7 points below Kansas; 31% in math, 10 points below; and 23% in science, 15 points below. Compared with the Leavenworth district, the school was ahead in ELA by 7 points and math by 10 points, but 2 points behind in science. These are relative standouts, not local school rankings. Other outcomes are mixed: the 2023–24 graduation rate was 81%, 9 points below Kansas, while chronic absenteeism in 2025–26 was 31%—2 points below the district but 13 points above the state.
ELA and math proficiency improved from 2024–25 to 2025–26, and the gaps with Kansas narrowed. ELA rose from 35% to 38%, a 4-point gain, and its state gap narrowed by 2 points; math rose from 28% to 31%, a 3-point gain, and its gap narrowed by 1 point. SchoolDigger’s ranking history, however, does not show a sustained rise: the school moved from the 47th percentile in 2023–24 to the 34th percentile in 2024–25, remaining at the 34th percentile in 2025–26. For additional context, its student-teacher ratio is 17.1 and its free/reduced-lunch rate is 45%; these figures describe the school but do not establish what drives its results.
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