Summary:
Decaturville, Tennessee, is home to just one high school, Riverside High School, which serves grades 9–12 and enrolls 440 students as part of Decatur County Schools. This school is the central hub for the community, and its overall performance is solid, earning a consistent 4-star rating from SchoolDigger for three straight years, even as its state percentile fluctuated from a high of 86th in 2024–2025 to a still-respectable 73rd in 2025–2026.
Looking at the key numbers, Riverside posts a graduation rate of 89.8%, just below the district (90.2%) and state (90.5%) averages. Its dropout rate of 2.8% is a standout positive — less than half the state average of 6.7% — and its chronic absenteeism rate of 17.2% is better than the state’s 18.3% but worse than the district’s 15.3%. The school spends $12,144 per student. Academically, Riverside is strong in Algebra I (40% proficient versus 32.3% statewide) and Algebra II (38.8% vs. 35.5% statewide), and it also performed well in English I (39.4% vs. 37.4% statewide). However, US History is a clear weakness, with only 27% proficient versus 42.4% statewide, and Biology I is below average at 43.3% vs. 49.8% statewide.
One of the most striking findings is the dramatic grade-level anomaly in Biology I: 9th graders achieved an extraordinary 94.4% proficiency, while 10th graders lagged at just 31.2%. This suggests possible differences in course-taking or instruction, and it stands out as the school’s most unusual data point. Year-over-year trends are mixed — Algebra I and Geometry improved, but English II dropped sharply from 72% to 58% proficiency, eliminating the school’s large prior advantage over the state. Riverside also had a notable dip in Biology I from 53.8% to 43.3%. Overall, this is a solid 4-star school with clear strengths in math and lower-level English, a very low dropout rate, and competitive rankings, but it needs to address weaknesses in US History and inconsistent results in Biology and English II to maintain its standing.
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