Plainfield South High School
2,411
Students
17.5:1
S:T Ratio
School Snapshot
Key metrics at a glance1,150
B+
25
A-
23
A+
24%
C
18:1
B
90%
A+
30%
C+
26%
C
This Week at Plainfield South – August 17, 2026
312 students practicing on Varsity Tutors
Academic Resources
Typical courses and practice resources for students at Plainfield South High School
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Plainfield South 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
After Plainfield South High
Where graduates go and what they studyIllinois State University
University of Illinois Urbana-Champaign
Northern Illinois University
University of Illinois Chicago
Joliet Junior College
Loyola University Chicago
Michigan State University
University of Iowa
Psychology
Nursing
Business
Biology
Pre-Medicine Studies
Computer Science
Marketing
Engineering
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7800 Caton Farm Rd, Plainfield, IL 60586
(815)439-5555
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Plainfield SD 202