Centennial High School is a secondary school in Ellicott City, Maryland, United States, that opened in 1977. The school is based in Howard County and is part of the Howard County Public School System.
Serving 1,364 students in grades 9-12, Centennial High School ranks in the top 1% of all schools in Maryland for overall test scores (math proficiency is top 5%, and reading proficiency is top 5%).
The percentage of students achieving proficiency in math is 77% (which is higher than the Maryland state average of 27%). The percentage of students achieving proficiency in reading/language arts is 88% (which is higher than the Maryland state average of 45%).
The student:teacher ratio of 16:1 is higher than the Maryland state level of 14:1.
Minority enrollment is 66% of the student body (majority Asian), which is lower than the Maryland state average of 68% (majority Black and Hispanic).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 1,364 students
- Student:Teacher Ratio: 16:1
- Minority Enrollment: 66%
- Graduation Rate: 98% (Top 5% in MD)
- Overall Testing Rank: Top 1%
- Math Proficiency: 77% (Top 5%)
- Reading Proficiency: 88% (Top 1%)
- Science Proficiency: 80% (Top 1%)
- Source: National Center for Education Statistics (NCES), MD Dept. of Education
Top Rankings
Centennial High School ranks among the top 20% of public schools in Maryland for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
Graduation Rate
School Overview
Centennial High School's student population of 1,364 students has declined by 14% over five school years.
The teacher population of 86 teachers has declined by 12% over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
1,364 students
Gender %
Total Classroom Teachers
86 teachers
Year Founded
1977
Colors
White, Blue, Red
School Rankings
Centennial High School ranks within the top 1% of all 1,338 schools in Maryland (based off of combined math and reading proficiency testing data).
The diversity score of Centennial High School is 0.69, which is less than the diversity score at state average of 0.74. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#13 out of 1338 schools
(Top 1%)
(Top 1%)
Math Test Scores (% Proficient)
77%
27%
Reading/Language Arts Test Scores (% Proficient)
88%
45%
Science Test Scores (% Proficient)
80%
36%
Student : Teacher Ratio
16:1
14:1
American Indian
n/a
n/a
Asian
42%
7%
Hispanic
7%
23%
Black
13%
33%
White
34%
32%
Hawaiian
n/a
n/a
Two or more races
4%
5%
All Ethnic Groups
Graduation Rate
98%
86%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
14%
44%
Eligible for Reduced Lunch
4%
5%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), MD Dept. of Education
School Notes
- School Mascot: Eagle
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Centennial High School's ranking?
Centennial High School is ranked #13 out of 1,338 schools, which ranks it among the top 1% of public schools in Maryland.
What schools are Centennial High School often compared to?
Centennial High Schoolis often viewed alongside schools like River Hill High School, Mount Hebron High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
77% of students have achieved math proficiency (compared to the 27% MD state average), while 88% of students have achieved reading proficiency (compared to the 45% MD state average).
What is the graduation rate of Centennial High School?
The graduation rate of Centennial High School is 98%, which is higher than the Maryland state average of 86%.
How many students attend Centennial High School?
1,364 students attend Centennial High School.
What is the racial composition of the student body?
42% of Centennial High School students are Asian, 34% of students are White, 13% of students are Black, 7% of students are Hispanic, and 4% of students are Two or more races.
What is the student:teacher ratio of Centennial High School?
Centennial High School has a student ration of 16:1, which is higher than the Maryland state average of 14:1.
What grades does Centennial High School offer ?
Centennial High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Centennial High School part of?
Centennial High School is part of Howard County School District.
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