Summary:
Zip code 37721 (Corryton, TN) is served by two public elementary schools — Gibbs Elementary School (966 students, grades PK–5) and Corryton Elementary School (195 students, grades K–5) — both part of Knox County Schools, a district ranked 78th out of 141 Tennessee districts. Families here have access to two schools that outperform that district-wide standing, with Corryton ranking at the 78th percentile statewide and Gibbs at the 67th percentile.
Corryton Elementary School is the clear academic leader, posting 65.0% ELA proficiency and 60.2% math proficiency, compared to 46.1% ELA and 52.6% math at Gibbs Elementary School. Corryton's 3rd grade class is especially strong, with 75.8% proficiency in both math and ELA, though its 4th grade scores drop more sharply. Gibbs, the larger school and the only one offering pre-kindergarten, excels in science (53.2%, above district and state averages) and 5th grade math (64.1%), but its overall ELA performance is only slightly above district and state averages.
The two schools have opposite academic profiles and could learn from each other: Corryton excels in ELA and math but falls below the district average in science, while Gibbs is stronger in science but weaker in reading. Gibbs has also trended downward in state ranking for three straight years, from the 77th percentile in 2023–24 to the 67th percentile in 2025–26. Both schools handle chronic absenteeism well — Gibbs at 14.0% and Corryton at 11.3%, well below the 19.4% district rate. Corryton also spends more per student ($15,264 vs. $13,044), a common pattern for smaller schools, and its small enrollment shows that a smaller size is no barrier to strong academic results.
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