St. Johns High
#43
Best Student:Teacher Ratio in South Carolina
387
Students
12.5:1
S:T Ratio
School Snapshot
Key metrics at a glance15
C
3
B-
9%
C
13:1
A-
This Week at St. Johns High – May 8, 2026
53 students practicing on Varsity Tutors
Academic Pathways
Explore 157 courses in the 2025-26 catalog for St. Johns High
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at St. Johns High.
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 28, 2026 – June 4, 2026
South Carolina End-of-Course
May 4, 2026 – May 29, 2026
SC READY
School Milestones
May 21, 2026 – June 4, 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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1518 Main Road, Johns Island, SC 29455
(843)559-6200
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Academic Calendar
Important dates, holidays, and school events