Enrollment
557
Delaware · 2024-25 NCES data
Elementary school (grades K-5) · Wilmington, DE
Edison (Thomas a.) Charter School
Federal NCES profile for Edison (Thomas a.) Charter School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 17/100.
2024-25 NCES dataElementary school (grades K-5)NCES 100001000079Charter school
👥 S:T ratio 40
🌟 Gifted program 30
🎓 Counselors 0
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Edison (Thomas a.) Charter School earns 17/100 on the Resource Investment Index, with class sizes larger than 70% of Delaware schools. It is also less racially and ethnically mixed than most Delaware schools.
- #24 of 24
- elementary schools in Wilmington · Resource Index
- 17
- Resource Index · Lower
- 15.1:1
- large classes for Delaware
- 557
- students enrolled
Edison (Thomas a.) Charter School has class sizes larger than 70% of Delaware schools. Computed live against every Delaware school reporting to NCES.
By Resource Investment Index, Edison (Thomas a.) Charter School ranks #24 of 24 elementary schools in Wilmington, DE.
School address
District: Edison (Thomas a.) Charter School · Delaware
NCES ID 100001000079 Verify on NCES CCD record →
Teachers (FTE)
37.0
Federal CCD staff survey
Students per teacher
15.1:1
vs 13.9:1 Delaware avg
+9% vs state
Student-teacher ratio in context
How Edison (Thomas a.) Charter School compares with Delaware and U.S. medians
What stands out at Edison (Thomas a.) Charter School
Edison (Thomas a.) Charter School is a mid-sized charter elementary school in Wilmington, Delaware, enrolling 557 students.
Class loads run somewhat heavier than typical: 15.1:1 puts it in the larger third of Delaware schools by student-teacher ratio.
With 557 students, its enrollment sits close to the Delaware median campus size.
Its Resource Investment Index trails 99% of the 222 Delaware schools with a score on record, one of the lower results on this measure.
Its student body is predominantly African American (96% of enrollment), among the less diverse in the state (diversity index 7/100).
Counselor access is stretched at roughly 557 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 44.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 20.8% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Wilmington's elementary schools, it stands alongside Brandywine Springs School (941 students): Edison (Thomas a.) Charter School is smaller than that campus by headcount and runs leaner classes (15.1:1 vs 15.4:1).
Edison (Thomas a.) Charter School is a single-school charter district, so Edison (Thomas a.) Charter School operates independently rather than alongside district-mates.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Edison (Thomas a.) Charter School compares
Edison (Thomas a.) Charter School on the metrics families compare, against Delaware and U.S. means.
| Metric | This school | vs Delaware | Delaware avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.1:1 | ▲ 9% | 13.9:1 | 15.7:1 |
| Enrollment | 557 | top 43% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.1:1
Leaner classes than 46% of US schools, a middle-of-the-pack class size.
557
Bigger than 68% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
15.1:1
students per teacher
- 9% above state mean
Top 70% in Delaware - lower ratio than 30% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
44.5%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$15,010
per pupil, district-wide
- below Delaware avg of $16,990
Somewhat 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
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
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.
Student-body diversity index 7.0/100
Simpson diversity index - at 7.0, Edison (Thomas a.) Charter School is less mixed than the Delaware school average of 61.3.
Programs
Funding & spending
District-wide per-pupil expenditure for Edison (Thomas a.) Charter School, which includes Edison (Thomas a.) Charter School.
$15,010
Per student
-12%
vs Delaware
Avg $16,990
-10%
vs U.S.
Avg $16,593
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 15.4:1 students per teacher
Mount Pleasant Elementary School
Standard public school
674 students 12.5:1 students per teacher
First State Montessori Academy
Standard public school
657 students 19.3:1 students per teacher
Kuumba Academy Charter School
Standard public school
594 students 10.2:1 students per teacher
The Bayard School
Standard public school
571 students 10.4:1 students per teacher
Baltz (Austin D.) Elementary School
Standard public school
549 students 12.5:1 students per teacher
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Delaware, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~557 students)
Similar student-teacher ratio (~15.1:1)
Next steps
Verify locally before acting on Edison (Thomas a.) Charter School's federal record.
- Compare Edison (Thomas a.) Charter School against another school. Compare schools
- Edison (Thomas a.) Charter School's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
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 an 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 15.1:1, which is 9% higher than the Delaware average of 13.9:1 and 4% lower than the national average of 15.7:1.
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% of enrollment, 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 17/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Edison (Thomas a.) Charter School rank among elementary schools in Wilmington?
By Resource Investment Index, Edison (Thomas a.) Charter School ranks #24 of 24 elementary schools in Wilmington, DE. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Wilmington on the city page.
Is Edison (Thomas a.) Charter School a good school?
Edison (Thomas a.) Charter School earns 17/100 on the Resource Investment Index, with class sizes larger than 70% of Delaware schools. It is also less racially and ethnically mixed than most Delaware schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Edison (Thomas a.) Charter School?
None; Edison (Thomas a.) Charter School is a single-school charter district, and Edison (Thomas a.) Charter School is its only campus.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.