A+
Centennial High
PublicHighGrades 9–12
4300 Centennial Ln, Ellicott City, MD 21042 · (410) 313-2856 · Part of Howard County Public Schools
Students
1,377
Students per teacher
17:1
Free or reduced lunch
19%
Setting
Suburb
Grades
9–12
What stands out about Centennial High
- School Grade A+: near the top of Maryland’s public schools
- Math proficiency 69 pts above the state
- Reading / language arts 55 pts above the state
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency88%
State average 19.3%
Reading / language arts90%
State average 35.5%
Location
Directions ↗
4300 Centennial Ln, Ellicott City
Students
Enrollment by grade
Grade 9356
Grade 10362
Grade 11350
Grade 12309
Enrollment over time
1,467’20
1,377’21
1,392’22
1,364’23
1,377’24
Down 6.1% since 2020.
Who goes here
Asian 40%White 33%Black 13%Hispanic 8%Two or more races 5%American Indian/Alaska Native <1%Native Hawaiian/Pacific Islander <1%
As reported to NCES, share of students with a reported race or ethnicity.
What neighbors say
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Parents talk
Conversations in Town Square that mention Centennial High.
Other schools in Howard County Public Schools
School facts: U.S. Department of Education (NCES), 2024-2025 school year. Scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). The School Grade is our own summary of state test results. Neighbor ratings are opinions, not an official measure of school quality.