51 public K-12 schools in Wilmington from NCES Common Core of Data: enrollment, grade span, demographics, and Civil Rights Data Collection statistics for every active campus.
National city placement
According to NCES CCD 2024-25, Wilmington has more public-school enrollment than 96% of the 4,487 US cities in this directory. Wilmington is among the largest city school systems in this directory by enrollment, but its campuses are divided among 14 districts. That combination matters: citywide averages blend separate budgets, staffing policies, attendance boundaries, and program rules. For a family comparing schools here, the district column is as important as the city average; two nearby campuses may answer to different boards and draw on different F-33 funding pools.
Wilmington's list includes 24 elementary, 5 middle, and 9 high-school campuses, plus 13 combined-grade records. The city average spans every major grade stage, so the ranked table is more informative when read within level than as one interchangeable queue.
Wilmington's average Resource Investment Index sits at the 41st percentile, while its teacher-staffing measure sits at the 80th percentile. The 39-point percentile gap is a reminder that the index is not a class-size score: counselors, gifted-program reporting, and attendance also affect it. Compare those components directly when two schools have similar index totals; the same headline score can arise from a different mix of reported resources.
Wilmington school enrollment ranges from 21 students (lowest) to 2,286 students (highest), a spread of 2,265 students. That ratio is an extreme outlier spread — among the widest gaps observed anywhere in this dataset. Per-school staffing and program breadth can differ sharply at opposite ends of that enrollment range, so the city average should not be treated as a typical campus.
Source: NCES Common Core of Data
Each school district has independent budgeting, hiring, and service delivery authority, and the sheer count here puts it in the extreme tail of fragmentation nationally. The fragmentation reflects historical patterns of inter-municipal boundary lines that pre-date modern city growth, students in different parts of the same city can attend different districts with different per-pupil spending, calendars, and graduation requirements. Per-region variation is largest in fragmented systems because each school district sets its own budget, contracts, and priorities without higher-level coordination above the regulatory floor.
Source: NCES Common Core of Data
student-teacher ratio is the simplest comparative metric but it does not capture the full picture: the ratio counts FTE classroom teachers against total enrollment, push-in specialists, English-language aides, special-education co-teachers, and counselors are not included in most reporting Lower values often correlate with smaller scale and population characteristics rather than higher resource budgets per se.
20% of the city's listed public-school campuses are reported as charter schools in NCES CCD. Charter status identifies a different governance arrangement; it does not establish admissions availability, academic quality, or the share of city students enrolled in those campuses. Open each school record to compare enrollment and staffing directly.
Source: NCES Common Core of Data
Showing top 50 of 51 schools.
Ranked by the Simpson student-body diversity index (0-100) from NCES race and ethnicity data, where higher means a more evenly mixed student body. It measures mix, not quality.
Heritage Elementary School has the highest Resource Investment Index among the Wilmington schools in this federal-data comparison at 60/100. The index summarizes reported staffing, counseling, gifted-program, and attendance inputs; it is not an academic rating.
Wilmington has 51 public schools with a total enrollment of 31,306 students. 10 are charter schools. Average student-teacher ratio: 12.9:1.
Side-by-side: Compare any two schools or districts in Delaware →
Data from NCES Common Core of Data (CCD) 2024-25 and Civil Rights Data Collection (CRDC) 2021-22. The Resource Investment Index uses reported student-teacher ratio, counselor access, gifted programs, and attendance; it is not an academic rating. Cities must include at least five schools to be listed. This public-data comparison is for informational purposes: verify current enrollment, attendance boundaries, and programs with the school district before acting. See the guide to understanding NCES data.
