- Enrollment
- 1,084
- Students per teacher
- 14.1:1
- Resource Index
- 35/100
High school (grades 9-12) · Wilmington, DE
Concord High School
Federal NCES profile for Concord High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 35/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 100124000247
👥 S:T ratio 46
🌟 Gifted program 30
🎓 Counselors 50
📋 Attendance 12
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Concord High School earns 35/100 on the Resource Investment Index, with class sizes near the Delaware median.
- #4 of 9
- high schools in Wilmington · Resource Index
- 35
- Resource Index · Typical
- 13.6:1
- students per teacher
- 994
- students enrolled
Concord High School has class sizes near the Delaware median. Computed live against every Delaware school reporting to NCES.
By Resource Investment Index, Concord High School ranks #4 of 9 high schools in Wilmington, DE.
School address
District: Brandywine School District · Delaware
NCES ID 100124000247 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+1 students YoY
Concord High School held near 1,015 students from 2022-23 to 2023-24 (+1 headcount).
Teacher FTE added 73.6 → 74.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+1 students YoY 100124000247 · Wilmington, DE High · MID · TRAD
994 enr · 13.6:1 · RII 35
Nearest enrollment peer: Mount Pleasant High School (1,084 students)
Concord High School held near 1,015 students from 2022-23 to 2023-24 (+1 headcount). Teacher FTE added 73.6 → 74.0 across the same CCD years. Read with this school → · District book → · Delaware schools → · Find another →
Concord High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Mount Pleasant
Mount Pleasant High School
1,084 students
- This school
Concord High School
994 students
- Claymont Eleme
Claymont Elementary School
937 students
- Talley Middle
Talley Middle School
900 students
- Brandywine Hig
Brandywine High School
897 students
- Springer Middl
Springer Middle School
776 students
What this shows Concord High School reports 994 students on the CCD universe file.
How Concord High School compares
Concord High School held steady on CCD headcount: ratios and free-lunch share vs Delaware and U.S. means.
| Metric | This school | vs Delaware | Delaware avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.6:1 | ▼ 2% | 13.9:1 | 15.7:1 |
| Enrollment | 994 | top 13% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.6:1
Leaner classes than 61% of US schools, a middle-of-the-pack class size.
994
Bigger than 91% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Staffing depth
13.6:1
students per teacher
- 2% below state mean
Top 48% in Delaware - lower ratio than 52% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
35.1%
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
$21,228
per pupil, district-wide
- above Delaware avg of $18,304
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors4.0 FTE
Per 249 students, the combined health-and-guidance staffing load for this school.
Discipline context
38
in-school suspensions + 48 out-of-school
Suspension rate: 3.8 per 100 students. Combined in-school and out-of-school rate: 8.7 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 46.5%
African American 35.0%
Asian 8.4%
Hispanic or Latino 7.3%
Two or More 2.0%
American Indian / Alaska Native 0.8%
Largest group: White at 46.5% of enrollment.
Student-body diversity index 64.8/100
Simpson diversity index - at 64.8, Concord High School is more mixed than the Delaware school average of 61.3.
Programs
AP courses offered 19
District finance for Brandywine School District reports $21,228 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Concord High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mount Pleasant High School | Similar size | No free-lunch data | Similar S:T ratio |
| Claymont Elementary School | Similar size | No free-lunch data | Higher S:T ratio |
| Talley Middle School | Similar size | No free-lunch data | Similar S:T ratio |
| Brandywine High School | Similar size | No free-lunch data | Similar S:T ratio |
| Springer Middle School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Concord High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 937
- Students per teacher
- 15.6:1
- Resource Index
- 39/100
- Enrollment
- 900
- Students per teacher
- 14.1:1
- Resource Index
- 38/100
- Enrollment
- 897
- Students per teacher
- 13:1
- Resource Index
- 33/100
- Enrollment
- 776
- Students per teacher
- 13.4:1
- Resource Index
- 38/100
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 12.5:1 students per teacher
Mount Pleasant High School
Standard public school
1,084 students 14.1:1 students per teacher
Charter School of Wilmington
Standard public school
977 students 19.2:1 students per teacher
Mckean (Thomas) High School
Standard public school
920 students 13:1 students per teacher
Howard High School of Technology
Vocational / career-technical school
905 students 13.7:1 students per teacher
Brandywine High School
Standard public school
897 students 13:1 students per teacher
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~994 students)
Frequently asked questions about Concord High School
How many students attend Concord High School?
Concord High School has 994 students enrolled. It is a high school in Wilmington, DE. CCD year-over-year: 1,014 (2022-23) → 1,015 (2023-24), nearly flat (+1).
What is the student-teacher ratio at Concord High School?
The student-teacher ratio at Concord High School is 13.6:1, which is 2% lower than the Delaware average of 13.9:1 and 13% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Concord High School?
The largest demographic group at Concord High School is White at 46.5% of enrollment, in Wilmington, DE. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.8/100.
What is the Resource Investment Index for Concord High School?
Concord High School has a Resource Investment Index of 35/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Concord High School rank among high schools in Wilmington?
By Resource Investment Index, Concord High School ranks #4 of 9 high 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 high schools in Wilmington on the city page.
What other schools are in Brandywine School District?
Besides Concord High School, Brandywine School District also operates Mount Pleasant High School (1,084 students), Claymont Elementary School (937 students), and Talley Middle School (900 students). See the Brandywine School District district page for the complete list.