Enrollment
920
Delaware · 2024-25 NCES data
High school (grades 9-12) · Wilmington, DE
Mckean (Thomas) High School
Federal NCES profile for Mckean (Thomas) 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 100130000274
👥 S:T ratio 48
📚 AP courses 40
🌟 Gifted program 30
🎓 Counselors 54
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mckean (Thomas) High School earns 34/100 on the Resource Investment Index, with class sizes near the Delaware median.
- #6 of 9
- high schools in Wilmington · Resource Index
- 34
- Resource Index · Typical
- 13:1
- students per teacher
- 920
- students enrolled
Mckean (Thomas) High School has class sizes near the Delaware median. Computed live against every Delaware school reporting to NCES.
By Resource Investment Index, Mckean (Thomas) High School ranks #6 of 9 high schools in Wilmington, DE.
School address
District: Red Clay Consolidated School District · Delaware
NCES ID 100130000274 Verify on NCES CCD record →
Teachers (FTE)
71.0
Federal CCD staff survey
Students per teacher
13:1
vs 13.9:1 Delaware avg
-6% vs state
Student-teacher ratio in context
How Mckean (Thomas) High School compares with Delaware and U.S. medians
What stands out at Mckean (Thomas) High School
Mckean (Thomas) High School is a mid-sized high school in Wilmington, Delaware, enrolling 920 students.
Class sizes run a bit leaner than typical: 13:1 puts it in the smaller third of Delaware schools by student-teacher ratio.
Enrollment of 920 puts it in the larger third of Delaware schools by headcount.
Its Resource Investment Index lands in the lower third of 222 scored Delaware schools.
Its student body is led by Hispanic or Latino (42%) and African American (28%) (diversity index 68/100).
On the academic-pipeline side it reports 8 Advanced Placement courses.
Counselor coverage is strong, about 230 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 45.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Red Clay Consolidated School District spends $21,267 per pupil, 25% above the Delaware average, a better-resourced district than most.
Discipline events run high: 239 in- and out-of-school suspensions were reported for 920 students in the 2021-22 Civil Rights Data Collection.
The federal civil-rights collection also records 5 expulsions at this campus for 2021-22.
Among Wilmington's high schools, it stands alongside Delcastle Technical High School (1,605 students): Mckean (Thomas) High School is smaller than that campus by headcount and runs heavier classes (13:1 vs 12.5:1).
Red Clay Consolidated School District also operates Conrad Schools of Science (1,164 students) and Dickinson (John) School (1,027 students) alongside Mckean (Thomas) 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 Mckean (Thomas) High School compares
Mckean (Thomas) 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 | 13:1 | ▼ 6% | 13.9:1 | 15.7:1 |
| Enrollment | 920 | top 17% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13:1
Leaner classes than 67% of US schools, among the more generously staffed nationally.
920
Bigger than 89% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
13:1
students per teacher
- 6% below state mean
Top 39% in Delaware - lower ratio than 61% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
45.9%
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
$21,267
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
Counselors4.0 FTE
Per 230 students, the combined health-and-guidance staffing load for this school.
Discipline context
86
in-school suspensions + 153 out-of-school
Suspension rate: 9.3 per 100 students. Combined in-school and out-of-school rate: 26.0 per 100 students. Reported via the Civil Rights Data Collection. Includes 5 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 41.5%
African American 27.9%
White 25.7%
Two or More 3.3%
Asian 1.0%
American Indian / Alaska Native 0.7%
Largest group: Hispanic or Latino at 41.5% of enrollment.
Student-body diversity index 68.3/100
Simpson diversity index - at 68.3, Mckean (Thomas) High School is more mixed than the Delaware school average of 61.3.
Programs
AP courses offered 8
Funding & spending
District-wide per-pupil expenditure for Red Clay Consolidated School District, which includes Mckean (Thomas) High School.
$21,267
Per student
+25%
vs Delaware
Avg $16,990
+28%
vs U.S.
Avg $16,593
Revenue mix
Local 37.2%
State 48.1%
Federal 14.7%
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 Mckean (Thomas) High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Conrad Schools of Science | Larger | No free-lunch data | Higher S:T ratio |
| Dickinson (John) School | Similar size | No free-lunch data | Higher S:T ratio |
| Calloway (Cab) School of the Arts | Similar size | No free-lunch data | Higher S:T ratio |
| Brandywine Springs School | Similar size | No free-lunch data | Higher S:T ratio |
| Dupont (H.B.) Middle School | Similar size | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Mckean (Thomas) High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,164
- Students per teacher
- 17.9:1
- Resource Index
- 40/100
- Enrollment
- 1,027
- Students per teacher
- 16:1
- Resource Index
- 34/100
- Enrollment
- 941
- Students per teacher
- 18.1:1
- Resource Index
- 43/100
- Enrollment
- 941
- Students per teacher
- 15.4:1
- Resource Index
- 47/100
- Enrollment
- 764
- Students per teacher
- 15.9:1
- Resource Index
- 41/100
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
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
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 (~920 students)
Next steps
Verify locally before acting on Mckean (Thomas) High School's federal record.
- Compare Mckean (Thomas) High School against another school. Compare schools
- Red Clay Consolidated 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 Mckean (Thomas) High School
How many students attend Mckean (Thomas) High School?
Mckean (Thomas) High School has 920 students enrolled. It is a high school in Wilmington, DE.
What is the student-teacher ratio at Mckean (Thomas) High School?
The student-teacher ratio at Mckean (Thomas) High School is 13:1, which is 6% lower than the Delaware average of 13.9:1 and 17% 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 Mckean (Thomas) High School?
The largest demographic group at Mckean (Thomas) High School is Hispanic or Latino at 41.5% of enrollment, in Wilmington, DE. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 68.3/100.
What is the Resource Investment Index for Mckean (Thomas) High School?
Mckean (Thomas) High School has a Resource Investment Index of 34/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mckean (Thomas) High School rank among high schools in Wilmington?
By Resource Investment Index, Mckean (Thomas) High School ranks #6 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 Mckean (Thomas) High School a good school?
Mckean (Thomas) High School earns 34/100 on the Resource Investment Index, with class sizes near the Delaware median. 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 Red Clay Consolidated School District?
Besides Mckean (Thomas) High School, Red Clay Consolidated School District also operates Conrad Schools of Science (1,164 students), Dickinson (John) School (1,027 students), and Calloway (Cab) School of the Arts (941 students). See the Red Clay Consolidated School District district page for the complete list.
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.