Waterloo High School
#104
Best ACT in Illinois High Schools
895
Students
17.6:1
S:T Ratio
School Snapshot
Key metrics at a glance1,180
B+
26
A-
18:1
B
93%
A+
43%
B-
39%
C+
This Week at Waterloo – June 19, 2026
120 students practicing on Varsity Tutors
Academic Resources
Typical courses and practice resources for students at Waterloo High School
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Waterloo High School.
National Tests
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
July 11, 2026
ACT — National
After Waterloo High
Where graduates go and what they studySouthern Illinois University Edwardsville
University of Illinois Urbana-Champaign
University of Missouri
Southwestern Illinois College
Purdue University
Michigan State University
Maryville University of St. Louis
Illinois State University
Nursing
Psychology
Business
Biology
Computer Science
Pre-Medicine Studies
Chemistry
Education
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505 E Bulldog, Waterloo, IL 62298
(618)939-3455
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Waterloo CUSD 5