Duncan High School
946
Students
18.2:1
S:T Ratio
School Snapshot
Key metrics at a glance20
B-
4
B-
7%
C
18:1
B-
This Week at Duncan – May 8, 2026
127 students practicing on Varsity Tutors
Academic Resources
Typical courses and practice resources for students at Duncan High School
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Duncan High School.
National Tests
March 30, 2026 – May 11, 2026
PSAT 10
March 30, 2026 – May 11, 2026
PSAT 8/9
April 21, 2026 – May 29, 2026
ACT — School Day - Late Spring Online
May 5, 2026 – May 19, 2026
ACT — School Day - Late Spring Paper
May 8, 2026
ACT
May 8, 2026
AP Art and Design
State Assessments
April 13, 2026 – May 13, 2026
Oklahoma School Testing Program — OSTP
School Milestones
May 11, 2026 – May 23, 2026
Graduation
May 20, 2026 – May 28, 2026
School End/Summer Start
May 21, 2026 – May 29, 2026
School End/Summer Start
May 28, 2026
School End/Summer Start
June 4, 2026
School End/Summer Start
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1325 N 19th Street, Duncan, OK 73533
(580)255-0700
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Duncan Public Schools
Academic Calendar
Important dates, holidays, and school events