Francis Howell Union High
O'Fallon, Missouri
High School, Grades 9–12
#9
Best ACT in Missouri High Schools
0:1
S:T Ratio
School Snapshot
Key metrics at a glance25
A-
97%
A+
This Week at Francis Howell Union High – June 9, 2026
99 students practicing on Varsity Tutors
Academic Resources
Typical courses and practice resources for students at Francis Howell Union High
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Francis Howell Union High.
National Tests
June 13, 2026
ACT — National
June 20, 2026 – July 4, 2026
SAT Score Release Date
June 23, 2026
ACT
June 24, 2026
ACT
July 1, 2026 – July 31, 2026
AP Score Release — All
July 6, 2026
ACT Photo Upload/Standby Deadline
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801 Corporate Centre Drive, O'Fallon, MO 63368
(636)851-5000
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Francis Howell School District