Correction (July 21, 2026): The original headline said no other Delaware district had declined. The complete package-backed panel shows four districts finished 2023 below their 2015 rates. The article also understated the white-Hispanic gap by subtracting separately rounded rates. This version corrects those claims, uses the package's current free/reduced-price-lunch subgroup, and removes causal and external numerical assertions that the graduation file cannot verify.

Seaford School District^↗ET's four-year graduation rate was 74.0% in 2023, down 5.8 percentage points from 79.8% in 2015. That was the steepest decline among Delaware's 19 districts with rates at both endpoints.

The statewide rate rose from 84.4% to 88.9% over the same period. Seaford's gap to the state therefore widened from 4.5 points to 14.9 points.

A Recovery From the Low, Not the Baseline

Seaford's path was uneven. Its rate climbed to 83.0% in 2019, fell to 75.8% in 2020 and 73.8% in 2021, then reached a low of 70.8% in 2022. The 2023 result was 3.2 points above that low but still below both the 2015 and 2019 rates.

Four districts, not one, finished 2023 below their 2015 rates. Indian River School District^↗ET fell 3.0 points, Sussex Technical School District^↗ET fell 2.1 and Laurel School District^↗ET fell 1.1. Seaford's 5.8-point decline was the largest. Lake Forest School District^↗ET, by contrast, gained 8.2 points, and Smyrna School District^↗ET gained 6.9.

The Widest Reported Gender Gap

Female students in Seaford graduated at 80.8% in 2023, compared with 67.7% for male students. The 13.1-point difference was the widest reported district gender gap that year. Christina School District^↗ET was next at 12.8 points.

The gap did not move in one direction. It narrowed to 3.2 points in 2019, when the male rate reached 81.3%, then widened to 5.9 points in 2022 and 13.1 points in 2023. Those changes describe different annual cohorts; the aggregate file does not establish why the gap moved.

Seaford's overall annual changes were also large in both directions: an 8.7-point gain in 2019, a 7.2-point loss in 2020 and a 3.2-point gain in 2023.

The reported cohort grew from 208 students in 2015 to 250 in 2023. Cohort size provides scale, but it does not show how individual students moved through the district or why the rate changed.

Subgroup Rates Moved Differently

In 2023, white students in Seaford graduated at 81.8%, Black students at 71.6% and Hispanic students at 69.4%. Using the unrounded package rates, the white-Hispanic gap was 12.5 points. In 2015, the Hispanic rate was 81.3% and the white rate was 80.8%; the Hispanic rate fell 11.9 points across the endpoint window.

Students who received free or reduced-price lunch had a 64.2% graduation rate in 2023, down from 77.6% in 2015. Their 13.4-point decline was the largest among Seaford subgroup series reported at both endpoints. English learners graduated at 66.7% in 2023, while students with disabilities graduated at 62.3%.

These service groups overlap with race and with one another, so their rates cannot be added together or treated as a decomposition of Seaford's overall result. The package-backed record establishes the size and direction of the gaps, not their causes.

Detailed code that reproduces the analysis and figures in this article is available exclusively to EdTribune subscribers.