Enrollment
557
Delaware · 2024-25 NCES data
2024-25 NCES data Elementary school (grades K-5) NCES 100001000079 Charter school
Edison (Thomas a.) Charter School — Wilmington, DE
Federal NCES profile for Edison (Thomas a.) Charter School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 15/100.
👥 Class size 32
🌟 Gifted program 30
🎓 Counselors 0
📋 Attendance 0
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: Edison (Thomas a.) Charter School · 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)
37.0
Federal CCD staff survey
Students per teacher
17.1:1
vs 14.1:1 Delaware avg
+21% vs state
Student-teacher ratio in context
How Edison (Thomas a.) Charter School 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
Edison (Thomas a.) Charter School reports 557 enrolled students to the National Center for Education Statistics (NCES) alongside 37.0 full-time-equivalent teachers, producing a 17.1:1 student-teacher ratio. That figure sits 21% 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 8% higher, a useful calibration for families comparing districts across state lines.
Counselor coverage works out to roughly 557 students per counselor, above the ASCA-recommended ceiling of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 44.5% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Edison (Thomas a.) Charter School spends $15,369 per pupil district-wide, below the Delaware average of $18,485 and below the national average of $19,490. Revenue comes 28.6% from local sources (property taxes), 50.6% from the state, and 20.8% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 15/100 (F), calculated from 4 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 Edison (Thomas a.) Charter School 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 | 17.1:1 | ▲ 21% | 14.1:1 | 15.9:1 |
| Enrollment | 557 | top 57% | — | — |
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
17.1:1
students per teacher
— 21% above state mean
Top 88% in Delaware — lower ratio than 12% of state schools
Between 15:1 and 20:1 — in line with the typical U.S. public-school staffing range.
Engagement
44.5%
chronically absent (missed 10%+ of school days)
Chronic absenteeism at or above 20% — the CDC threshold for "high" — signals significant barriers to regular attendance.
Funding equity
$15,369
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
Counselors1.0 FTE
Per 557 students — the combined health-and-guidance staffing load for this school.
Discipline context
33
in-school suspensions + 50 out-of-school
Suspension rate: 5.9 per 100 students. Combined in-school and out-of-school rate: 14.9 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 557 Top 57% in Delaware — larger than 43% of 223 state schools
Teachers (FTE) 37.0
Students per teacher 17.1:1 +21% vs state
Free-lunch eligible —
NCES ID 100001000079
Student demographics
African American 96.4%
Two or More 1.3%
White 1.1%
Hispanic or Latino 0.9%
American Indian / Alaska Native 0.2%
Native Hawaiian / Pacific Islander 0.2%
Largest group: African American at 96.4% of enrollment.
Programs & staff
Counselors (FTE) 1.0
Students per counselor 557:1
Discipline & special education
Chronically absent 44.5%
In-school suspensions 33
Out-of-school suspensions 50
Funding & spending
District-wide per-pupil expenditure for Edison (Thomas a.) Charter School, which includes Edison (Thomas a.) Charter School.
$15,369
Per student
-17%
vs Delaware
Avg $18,485
-21%
vs U.S.
Avg $19,490
Revenue mix
Local 28.6%
State 50.6%
Federal 20.8%
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 elementary schools in Wilmington
6 comparable elementary schools (grades K-5) serving the same city.
Brandywine Springs School
Standard public school
941 students 15.5:1 students per teacher
Mount Pleasant Elementary School
Standard public school
674 students 13:1 students per teacher
First State Montessori Academy
Standard public school
657 students 18.5:1 students per teacher
Kuumba Academy Charter School
Standard public school
594 students 11.1:1 students per teacher
The Bayard School
Standard public school
571 students 9.2:1 students per teacher
Baltz (Austin D.) Elementary School
Standard public school
549 students 12:1 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 Edison (Thomas a.) Charter School
How many students attend Edison (Thomas a.) Charter School?
Edison (Thomas a.) Charter School has 557 students enrolled. It is a elementary school in Wilmington, DE.
What is the student-teacher ratio at Edison (Thomas a.) Charter School?
The student-teacher ratio at Edison (Thomas a.) Charter School is 17.1:1, which is 21% higher than the Delaware average of 14.1:1 and 8% higher than the national average of 15.9:1.
What is the racial and ethnic makeup of Edison (Thomas a.) Charter School?
The largest demographic group at Edison (Thomas a.) Charter School is African American at 96.4%. The school serves a diverse student body in Wilmington, DE.
What is the Resource Investment Index for Edison (Thomas a.) Charter School?
Edison (Thomas a.) Charter School has a Resource Investment Index of 15/100 (F) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.