Enrollment
977
Delaware · 2024-25 NCES data
2024-25 NCES data High school (grades 9-12) NCES 100000400012 Charter school
Charter School of Wilmington — Wilmington, DE
Federal NCES profile for Charter School of Wilmington, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 57/100.
👥 Class size 24
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 51
📋 Attendance 81
How this works: Each indicator above is scored 0–100 from federal NCES and CRDC data, then averaged into the Resource Investment Index. This measures resource allocation — staffing, programs, and support services — not standardized test scores or academic outcomes. Full methodology →
School address
District: Charter School of Wilmington · Delaware
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Teachers (FTE)
51.0
Federal CCD staff survey
Students per teacher
19:1
vs 14.1:1 Delaware avg
+35% vs state
Student-teacher ratio in context
How Charter School of Wilmington compares with Delaware and U.S. medians
The federal record — no proprietary index, no editorial formula.
PlainSchools publishes the actual federal measurements — enrollment, staffing, demographics, discipline, and finance — straight from the NCES Common Core of Data, CRDC, and F-33 surveys. No composite rating, no opinion-based score on top. You get the same raw numbers researchers and policymakers use, with benchmarks, spending context, and equity indicators computed from the same federal datasets. Full methodology linked below.
What this school's NCES data tells you
Charter School of Wilmington reports 977 enrolled students to the National Center for Education Statistics (NCES) alongside 51.0 full-time-equivalent teachers, producing a 19:1 student-teacher ratio. That figure sits 35% above the Delaware state mean of 14.1:1, signalling larger average class loads than peers in the same state. Against the national 2024-25 average of 15.9:1, it is 19% higher, a useful calibration for families comparing districts across state lines.
The school offers 21 Advanced Placement courses, a stronger academic pipeline indicator than enrollment alone. Counselor coverage works out to roughly 244 students per counselor, meeting the American School Counselor Association recommendation of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 7.8% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Charter School of Wilmington spends $10,550 per pupil district-wide, below the Delaware average of $18,485 and below the national average of $19,490. Revenue comes 38.7% from local sources (property taxes), 56.8% from the state, and 4.5% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 57/100 (C), calculated from 5 distinct NCES and CRDC indicators measuring resource allocation rather than academic outcomes.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Charter School of Wilmington compares
Cross-validating school-level NCES values against Delaware state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Delaware | Delaware avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 19:1 | ▲ 35% | 14.1:1 | 15.9:1 |
| Enrollment | 977 | top 86% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
What the federal data reveals about equity at this school
Federal measurements — not ratings — surface the resource and opportunity picture. Below are the indicators that researchers, civil-rights monitors, and funding formulas use to assess equity.
Staffing depth
19:1
students per teacher
— 35% above state mean
Top 96% in Delaware — lower ratio than 4% of state schools
Between 15:1 and 20:1 — in line with the typical U.S. public-school staffing range.
Engagement
7.8%
chronically absent (missed 10%+ of school days)
Below 10% — strong attendance relative to the post-pandemic national landscape.
Funding equity
$10,550
per pupil, district-wide
— below Delaware avg of $18,485
Below the U.S. average per-pupil spend — funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors4.0 FTE
Per 244 students — the combined health-and-guidance staffing load for this school.
Discipline context
13
in-school suspensions + 10 out-of-school
Suspension rate: 1.3 per 100 students. Combined in-school and out-of-school rate: 2.4 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 977 Top 86% in Delaware — larger than 14% of 223 state schools
Teachers (FTE) 51.0
Students per teacher 19:1 +35% vs state
Free-lunch eligible —
NCES ID 100000400012
Student demographics
White 40.3%
Asian 39.1%
Hispanic or Latino 8.1%
African American 7.6%
Two or More 4.3%
American Indian / Alaska Native 0.4%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 40.3% of enrollment.
Programs & staff
AP courses offered 21
Counselors (FTE) 4.0
Students per counselor 244:1
Discipline & special education
Chronically absent 7.8%
In-school suspensions 13
Out-of-school suspensions 10
Funding & spending
District-wide per-pupil expenditure for Charter School of Wilmington, which includes Charter School of Wilmington.
$10,550
Per student
-43%
vs Delaware
Avg $18,485
-46%
vs U.S.
Avg $19,490
Revenue mix
Local 38.7%
State 56.8%
Federal 4.5%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
Similar high schools in Wilmington
6 comparable high schools (grades 9-12) serving the same city.
Delcastle Technical High School
Vocational / career-technical school
1,605 students 12.4:1 students per teacher
Mount Pleasant High School
Standard public school
1,084 students 14.4:1 students per teacher
Concord High School
Standard public school
994 students 13.9:1 students per teacher
Mckean (Thomas) High School
Standard public school
920 students 13.1:1 students per teacher
Howard High School of Technology
Vocational / career-technical school
905 students 13.5:1 students per teacher
Brandywine High School
Standard public school
897 students 13.8:1 students per teacher
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
Frequently asked questions about Charter School of Wilmington
How many students attend Charter School of Wilmington?
Charter School of Wilmington has 977 students enrolled. It is a high school in Wilmington, DE.
What is the student-teacher ratio at Charter School of Wilmington?
The student-teacher ratio at Charter School of Wilmington is 19:1, which is 35% higher than the Delaware average of 14.1:1 and 19% higher than the national average of 15.9:1.
What is the racial and ethnic makeup of Charter School of Wilmington?
The largest demographic group at Charter School of Wilmington is White at 40.3%. The school serves a diverse student body in Wilmington, DE.
What is the Resource Investment Index for Charter School of Wilmington?
Charter School of Wilmington has a Resource Investment Index of 57/100 (C) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.