Summary:
Zip code 23418 is home to just one high school, Nandua High in Onley, Virginia, serving grades 9–12 with 621 students as part of Accomack County Public Schools, a district ranked 69th out of 131 in Virginia.
Because Nandua is the only high school in the area, it is best judged against state averages. The school's standout strengths are clearly in math and science: Geometry proficiency reached 100% in 2025–2026, Algebra I hit 91.6%, and Biology reached 84.7%—all well above state levels. English Reading (85.1%) is close to the state average, but Writing (73.4%) lags by about six points. The biggest concern is social studies: World History I proficiency was just 13.6% the prior year, and VA/US History was 24.3%, far below state averages. If your child needs extra support in history or writing, that may require attention, while math and science instruction appears especially effective.
Attendance is a bright spot, with a chronic absenteeism rate of only 4.3%—less than a third of the state's 14.8%—even though 97.4% of students qualify for free/reduced lunch. The graduation rate (87.5%) is below the state's 92.3%, and the dropout rate (9.1%) is nearly double the state rate, suggesting that while students show up, on-time completion is a challenge. The school is improving its state ranking, moving from the 46th percentile (2 stars) in 2023–2024 to the 57th percentile (3 stars) in 2025–2026. With a favorable student-teacher ratio of 11.7:1 and modest per-pupil spending of $9,291, Nandua High shows that strong attendance and math/science achievement are possible despite economic challenges—but improving social studies and graduation rates will be key to ensuring all students succeed.
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