Centennial High
1,392
Students
16.6:1
S:T Ratio
School Snapshot
Key metrics at a glance36
A+
57%
B
17:1
B
This Week at Centennial High – August 18, 2026
184 students practicing on Varsity Tutors
Academic Resources
Typical courses and practice resources for students at Centennial High
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Centennial High.
National Tests
August 1, 2026 – November 30, 2026
ISEE — Fall Testing Season
August 3, 2026 – June 30, 2027
SSAT — Flex Testing
August 22, 2026
SAT — National
August 28, 2026
SAT — National
September 1, 2026
ACT — National
September 1, 2026
SAT — National
State Assessments
December 7, 2026 – January 22, 2027
MCAP — ELA
December 7, 2026 – January 22, 2027
MCAP — Mathematics
December 7, 2026 – January 22, 2027
MCAP — Government EOC
January 6, 2027 – March 3, 2027
WIDA ACCESS
March 29, 2027 – May 28, 2027
MCAP — Science (LS MISA)
March 29, 2027 – May 28, 2027
MCAP — Government
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ACT Prep
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4300 Centennial Ln, Ellicott City, MD 21042
(410)313-2856
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Howard County Public Schools
Academic Calendar
Important dates, holidays, and school events