Summary:
Zip code 19940 is home to a single high school, Delmar High School, which serves grades 9 through 12 with an enrollment of 713 students in the Delmar, Delaware area.
Delmar High School is part of the Delmar School District, which ranks 8th out of 34 districts in the state. The school itself has shown significant academic improvement, with dramatic year-over-year gains across all tested subjects. In the 2025-2026 school year, ELA proficiency reached 49.69%, nearly 6 points above the state average, and social studies scores also exceeded state averages. However, math proficiency remains a challenge at just 19.02%, meaning roughly 4 out of 5 students are not proficient in this subject. The school's graduation rate is strong at 93.8%, well above the state average of 88.9%, and its dropout rate of 3.9% matches the state average exactly.
One of the most pressing concerns for Delmar High School is chronic absenteeism, which stands at 28.5%—significantly higher than both the district average of 22.0% and the state average of 17.1%. This high rate of absenteeism likely contributes to the school's ranking volatility, which has fluctuated from 14th to 27th and back to 16th in state rankings over three years. Additionally, while reading scores are strong, SAT Essay scores lag behind the state by 6.59 points, suggesting students may need more support in analytical writing. With a student-teacher ratio of 20.3:1 and per-student spending of $11,342, the school operates with modest resources but has shown it can achieve strong outcomes in several areas. Addressing absenteeism should be a top priority, as it likely underpins many of the performance challenges the school faces.
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