Enrollment
1,605
Delaware · 2024-25 NCES data
High school (grades 9-12) · Wilmington, DE
Delcastle Technical High School
Federal NCES profile for Delcastle Technical High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 34/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 100128000154
👥 S:T ratio 50
📚 AP courses 10
🌟 Gifted program 30
🎓 Counselors 47
📋 Attendance 35
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Delcastle Technical High School earns 34/100 on the Resource Investment Index, with class sizes near the Delaware median. It is also one of the largest schools in Delaware.
- #2 of 9
- high schools in Wilmington · Resource Index
- 34
- Resource Index · Typical
- 12.5:1
- students per teacher
- 1,605
- students enrolled
Delcastle Technical High School has class sizes near the Delaware median. Computed live against every Delaware school reporting to NCES.
By Resource Investment Index, Delcastle Technical High School ranks #2 of 9 high schools in Wilmington, DE.
School address
NCES ID 100128000154 Verify on NCES CCD record →
Teachers (FTE)
128.0
Federal CCD staff survey
Students per teacher
12.5:1
vs 13.9:1 Delaware avg
-10% vs state
Student-teacher ratio in context
How Delcastle Technical High School compares with Delaware and U.S. medians
What stands out at Delcastle Technical High School
Delcastle Technical High School is a large high school in Wilmington, Delaware, enrolling 1,605 students.
Class sizes run a bit leaner than typical: 12.5:1 puts it in the smaller third of Delaware schools by student-teacher ratio.
By headcount it is one of the larger campuses in Delaware, bigger than 96% of state schools at 1,605 students.
Its Resource Investment Index sits near the middle of the pack among 222 scored Delaware schools.
Its student body is led by Hispanic or Latino (44%) and African American (30%) (diversity index 67/100).
No Advanced Placement courses are reported for this campus in the federal data.
Counselor coverage runs a bit thin, about 268 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 26.1% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding New Castle County Vocational-Technical School District spends $20,607 per pupil, 21% above the Delaware average, a better-resourced district than most.
The federal civil-rights collection also records 8 expulsions at this campus for 2021-22.
Among Wilmington's high schools, it stands alongside Mount Pleasant High School (1,084 students): Delcastle Technical High School is larger than that campus by headcount and runs leaner classes (12.5:1 vs 14.1:1).
New Castle County Vocational-Technical School District also operates St. Georges Technical High School (1,198 students) and Hodgson (Paul M.) Vocational Technical High School (1,104 students) alongside Delcastle Technical High School.
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 Delcastle Technical High School compares
Delcastle Technical High 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 | 12.5:1 | ▼ 10% | 13.9:1 | 15.7:1 |
| Enrollment | 1,605 | top 4% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.5:1
Leaner classes than 71% of US schools, among the more generously staffed nationally.
1,605
Bigger than 97% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
12.5:1
students per teacher
- 10% below state mean
Top 32% in Delaware - lower ratio than 68% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
26.1%
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
$20,607
per pupil, district-wide
- above Delaware avg of $16,990
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors6.0 FTE
Per 268 students, the combined health-and-guidance staffing load for this school.
Discipline context
86
in-school suspensions + 125 out-of-school
Suspension rate: 5.4 per 100 students. Combined in-school and out-of-school rate: 13.1 per 100 students. Reported via the Civil Rights Data Collection. Includes 8 expulsions.
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
Hispanic or Latino 44.0%
African American 30.1%
White 19.8%
Two or More 4.5%
Asian 0.9%
American Indian / Alaska Native 0.6%
Native Hawaiian / Pacific Islander 0.1%
Largest group: Hispanic or Latino at 44.0% of enrollment.
Student-body diversity index 67.4/100
Simpson diversity index - at 67.4, Delcastle Technical High School is more mixed than the Delaware school average of 61.3.
Programs
AP program Not offered
Funding & spending
District-wide per-pupil expenditure for New Castle County Vocational-Technical School District, which includes Delcastle Technical High School.
$20,607
Per student
+21%
vs Delaware
Avg $16,990
+24%
vs U.S.
Avg $16,593
Revenue mix
Local 34.6%
State 58.4%
Federal 7.0%
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.
How Delcastle Technical High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| St. Georges Technical High School | Smaller | No free-lunch data | Higher S:T ratio |
| Hodgson (Paul M.) Vocational Technical High School | Smaller | No free-lunch data | Similar S:T ratio |
| Howard High School of Technology | Smaller | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Delcastle Technical High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,198
- Students per teacher
- 15.2:1
- Resource Index
- 39/100
- Enrollment
- 1,104
- Students per teacher
- 13.8:1
- Resource Index
- 33/100
- Enrollment
- 905
- Students per teacher
- 13.7:1
- Resource Index
- 32/100
Similar high schools in Wilmington
6 comparable high schools (grades 9-12) serving the same city.
Mount Pleasant High School
Standard public school
1,084 students 14.1:1 students per teacher
Concord High School
Standard public school
994 students 13.6:1 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
Similar high 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 (~1,605 students)
Similar student-teacher ratio (~12.5:1)
Next steps
Verify locally before acting on Delcastle Technical High School's federal record.
- Compare Delcastle Technical High School against another school. Compare schools
- New Castle County Vocational-Technical School District'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 Delcastle Technical High School
How many students attend Delcastle Technical High School?
Delcastle Technical High School has 1,605 students enrolled. It is a high school in Wilmington, DE.
What is the student-teacher ratio at Delcastle Technical High School?
The student-teacher ratio at Delcastle Technical High School is 12.5:1, which is 10% lower than the Delaware average of 13.9:1 and 20% 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 Delcastle Technical High School?
The largest demographic group at Delcastle Technical High School is Hispanic or Latino at 44.0% of enrollment, in Wilmington, DE. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 67.4/100.
What is the Resource Investment Index for Delcastle Technical High School?
Delcastle Technical High School has a Resource Investment Index of 34/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Delcastle Technical High School rank among high schools in Wilmington?
By Resource Investment Index, Delcastle Technical High School ranks #2 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.
Is Delcastle Technical High School a good school?
Delcastle Technical High School earns 34/100 on the Resource Investment Index, with class sizes near the Delaware median. It is also one of the largest schools in Delaware. 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 New Castle County Vocational-Technical School District?
Besides Delcastle Technical High School, New Castle County Vocational-Technical School District also operates St. Georges Technical High School (1,198 students), Hodgson (Paul M.) Vocational Technical High School (1,104 students), and Howard High School of Technology (905 students). See the New Castle County Vocational-Technical School District district page for the complete list.
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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.