Summary
Karns High School is a comprehensive public high school in Knoxville, TN, serving 1,365 students in grades 9–12 as part of Knox County Schools, and it sits right at the middle of Tennessee's rankings — 199th out of 400 schools (50th percentile, 3 stars) in 2025–2026. The school has been remarkably stable over the past decade, generally bouncing between the low-to-mid 40s and 50s in statewide percentile terms, with one exception: a 2015–2016 peak at 82nd percentile (4 stars). Karns' biggest challenge is context: it sits in a high-performing corridor. Within roughly 12 miles, Farragut High School (95th percentile), Hardin Valley Academy (76th), Bearden High School (77th), and L&N STEM Academy (99th) all rank well above Karns, while Powell High School sits essentially tied with Karns at the 50th percentile.
Academically, Karns has something of a "split personality." Its most glaring weakness is Algebra I, where only 10.2% of students were proficient in 2025–2026, versus 32.8% in the district and 32.3% statewide — among the lowest of nearby schools. However, the math struggles are not uniform. Students in accelerated pathways perform well: 93.1% of 9th graders taking Geometry and 74.1% of 10th graders taking Algebra II were proficient, both above state averages. In science and social studies, Karns actually shines: Biology I proficiency (57.2%) matches the district and beats the state (49.8%), and US History proficiency (46.9%) tops both district (42.0%) and state (42.4%) averages.
The most urgent concern, however, is a drop in graduation outcomes. After several years at or near 90%, Karns' graduation rate fell to 86.6% in 2024–2025 — below the district (90.4%) and state (90.5%) — while the dropout rate jumped to 9.7%, up from 3.6% the prior year. Chronic absenteeism has improved sharply, from 36.3% in 2021–2022 to 22.4% in 2024–2025, though it still exceeds district (19.4%) and state (18.3%) averages. One genuinely bright spot: Karns ranks in the 72nd percentile (4 stars) for special education student outcomes — a dramatic one-year jump from the 39th percentile — suggesting recent targeted efforts may be paying off.
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