Summary:
Zip code 39090 is served by exactly one high school, Kosciusko Senior High School, which enrolls 579 students in grades 9–12. The school belongs to the Kosciusko School District, which ranks 52nd out of 134 districts in Mississippi. The student-teacher ratio is 14.1, and 76.68 percent of students qualify for free/reduced lunch, indicating a high-poverty population. Because it is the only high school in the district, the school's high-school-level data are essentially identical to the district's, with English II, Biology, and U.S. History proficiency rates matching the district numbers exactly.
The school's graduation rate is 88.9 percent, just 0.3 points below the state average of 89.2 percent, showing that students complete high school at a rate close to the statewide norm. However, chronic absenteeism stands at 26.4 percent, higher than both the district (21.6 percent) and the state (23.9 percent). Academically, the most recent MAAP scores show mixed results: Algebra I proficiency is 64.4 percent, slightly below the state's 66.0 percent; English II is the weakest subject at 45.1 percent, 4.2 points below the state; and Biology fell sharply from 77.2 percent in 2024–2025 to 57.6 percent in 2025–2026, a 19.6-point decline that reversed the school's previous 15.2-point advantage over the state.
In the most recent state ranking, Kosciusko Senior High School placed 122nd out of 224 schools, putting it in the 46th percentile and earning 2 stars; the prior year it earned 3 stars at the 50th percentile. Over three years, the school has consistently ranked in the mid-range of Mississippi high schools, between the 45th and 50th percentiles. The combination of above-average absenteeism, below-average English II scores, and a high-poverty student population presents clear challenges, yet the near-average graduation rate and a strong Biology performance relative to the state in 2024–2025 suggest the school is capable of success. The sharp drop in Biology is the most urgent trend to watch in the coming year.
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