Schools in Zip Code 28339

In ZIP code 28339, which covers Erwin, NC, there are just two schools serving roughly 1,900 students: Erwin Elementary (grades PK–5) and Triton High (grades 9–12), with no middle school in the area. Both schools belong to Harnett County Schools, a district ranked in the 30th percentile of North Carolina districts. One of the most defining characteristics of these two schools is their student population: nearly all students at both schools qualify for free or reduced-price lunch, meaning this is a high-poverty area, and that context is essential when looking at test scores and school ratings.

The standout story in this area is Erwin Elementary, which made a dramatic jump from the 6th percentile to the 20th percentile in state rankings between the 2024-2025 and 2025-2026 school years. Its 3rd grade reading proficiency soared by 22 points, and 5th grade science improved by 16 points, showing real momentum. However, that improvement is uneven: 4th grade reading stayed flat at just 33% proficient, which is about 25 points below the state average. Meanwhile, Triton High has remained stuck near the bottom fifth of high schools for three straight years, though it did post a huge 20-point gain in Biology and a more modest improvement in Math III. Its graduation rate of 88% is close to the state average, yet only 27% of students are proficient in Math I, indicating many graduates may not be fully prepared in foundational math.

Compared side by side, Erwin Elementary has a much more favorable student-teacher ratio (about 15 to 1 versus 22 to 1 at Triton High) and lower chronic absenteeism. Triton High’s chronic absenteeism rate of nearly 29% is a serious concern that likely holds back achievement. The biggest red flags to watch are the flat 4th grade reading scores at the elementary school, the very low Math I proficiency at the high school, and Triton High’s high rate of students missing school. The encouraging news is that both schools have shown they can improve in specific subjects, so this is not a static picture. For parents, the bottom line is that Erwin Elementary is moving in the right direction, while Triton High remains a school with significant academic gaps that its near-average graduation rate does not fully reveal.