Arapahoe High School
#8
Best ACT in Colorado High Schools
1,820
Students
21.7:1
S:T Ratio
School Snapshot
Key metrics at a glance1,250
A-
29
A
15
A
22%
C
22:1
B-
95%
A+
86%
A
60%
B+
This Week at Arapahoe – August 18, 2026
241 students practicing on Varsity Tutors
Academic Resources
Typical courses and practice resources for students at Arapahoe High School
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Arapahoe High School.
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
January 11, 2027 – February 12, 2027
WIDA ACCESS
January 11, 2027 – February 12, 2027
WIDA Alternate ACCESS
April 5, 2027 – April 23, 2027
CMAS
April 5, 2027 – April 23, 2027
CoAlt
After Arapahoe High
Where graduates go and what they studyColorado State University
University of Colorado Boulder
University of Denver
University of Northern Colorado
Colorado School of Mines
University of Colorado Denver
University of Arizona
Arizona State University
Business
Psychology
Biology
Nursing
Pre-Medicine Studies
Marketing
Engineering
Pre-Law Studies
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2201 East Dry Creek Road, Centennial, CO 80122
(303)347-6000
Littleton School District No. 6 in the county of Arapahoe
Academic Calendar
Important dates, holidays, and school events