Thomas McKean High School is a comprehensive public high school located on 301 McKennan's Church Road in unincorporated New Castle County, Delaware, with a Wilmington postal address. It is a part of the Red Clay Consolidated School District.
Serving 870 students in grades 9-12, Mckean (Thomas) High School ranks in the bottom 50% of all schools in Delaware for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is ≤5% (which is lower than the Delaware state average of 31%). The percentage of students achieving proficiency in reading/language arts is 15-19% (which is lower than the Delaware state average of 42%).
The student-teacher ratio of 13:1 is lower than the Delaware state level of 14:1.
Minority enrollment is 74% of the student body (majority Hispanic), which is higher than the Delaware state average of 61% (majority Black and Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 870 students
- Student-Teacher Ratio: 13:1
- Minority Enrollment: 74%
- Graduation Rate: 90% (Btm 50% in DE)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: ≤5% (Btm 50%)
- Reading Proficiency: 15-19% (Btm 50%)
- Science Proficiency: 10-14% (Btm 50%)
- Source: National Center for Education Statistics (NCES), DE Dept. of Education
<Â鶹¹û¶³´«Ã½ class='so-dt-title' id="overview">School Overview <Â鶹¹û¶³´«Ã½ class='so-dt-title' id="school-rankings">School Rankings
Mckean (Thomas) High School's student population of 870 students has stayed relatively flat over five school years.
The teacher population of 66 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
870 students
Gender %
Total Classroom Teachers
66 teachers
Year Founded
1966
Colors
White, Green, Navy Blue
School Calendar
Last Day of School
Mon. May 25, 2026
Mckean (Thomas) High School ranks within the bottom 50% of all 199 schools in Delaware (based off of combined math and reading proficiency testing data).
The diversity score of Mckean (Thomas) High School is 0.69, which is less than the diversity score at state average of 0.71. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#190 out of 199 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
≤5%
31%
Reading/Language Arts Test Scores (% Proficient)
15-19%
42%
Science Test Scores (% Proficient)
10-14%
21%
Student-Teacher Ratio
13:1
14:1
American Indian
1%
n/a
Asian
1%
4%
Hispanic
43%
20%
Black
26%
31%
White
26%
39%
Hawaiian
n/a
n/a
Two or more races
3%
6%
All Ethnic Groups
Graduation Rate
90%
88%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
44%
33%
Eligible for Reduced Lunch (12-13)
5%
5%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), DE Dept. of Education
<Â鶹¹û¶³´«Ã½ class='so-dt-title' id="school-notes">School Notes- School Mascot: Highlander
Profile last updated: 02/09/2025
<Â鶹¹û¶³´«Ã½ class='so-dt-title' id='faq'>Frequently Asked Questions What is Mckean (Thomas) High School's ranking?
Mckean (Thomas) High School is ranked #190 out of 199 schools, which ranks it among the bottom 50% of public schools in Delaware.
What schools are Mckean (Thomas) High School often compared to?
Mckean (Thomas) High Schoolis often viewed alongside schools like Dupont (Alexis I.) High School, Charter School Of Wilmington, Dickinson (John) School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
≤5% of students have achieved math proficiency (compared to the 31% DE state average), while 15-19% of students have achieved reading proficiency (compared to the 42% DE state average).
What is the graduation rate of Mckean (Thomas) High School?
The graduation rate of Mckean (Thomas) High School is 90%, which is higher than the Delaware state average of 88%.
How many students attend Mckean (Thomas) High School?
870 students attend Mckean (Thomas) High School.
What is the racial composition of the student body?
43% of Mckean (Thomas) High School students are Hispanic, 26% of students are Black, 26% of students are White, 3% of students are Two or more races, 1% of students are American Indian, and 1% of students are Asian.
What is the student-teacher ratio of Mckean (Thomas) High School?
Mckean (Thomas) High School has a student ration of 13:1, which is lower than the Delaware state average of 14:1.
What grades does Mckean (Thomas) High School offer ?
Mckean (Thomas) High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Mckean (Thomas) High School part of?
Mckean (Thomas) High School is part of Red Clay Consolidated School District.
School ReviewsReview Mckean (Thomas) High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Review Mckean (Thomas) High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
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