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A−

St. Johns High

PublicHighGrades 9–12

1518 Main Road, Johns Island, SC 29455 · (843) 559-6200 · Part of Charleston County School District

Charleston’s School Grade B+ better than 73% of South Carolina school districts

Directions
Students
390
Students per teacher
11:1
Setting
City
Grades
9–12
The gist

What stands out about St. Johns High

  • Its own letter, A−: reading and math results near the top of South Carolina’s public schools
  • Reading / language arts 24 pts above the state
  • Small classes: 11 students per teacher

On the path

Where Charleston kids come from and go next. The whole path →

6–89 middle schoolsDepends on your address
9–12St. Johns HighYou are here

Test scores

2020–21
Math proficiency42%
State average 38.3%
Reading / language arts72%
State average 48.1%

Its own letter, A−, places these results among South Carolina’s 1,072 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).

Location

Directions ↗

1518 Main Road, Johns Island

Students

Enrollment by grade
Grade 9108
Grade 10104
Grade 1191
Grade 1287
Enrollment over time
377’20
405’21
387’22
423’23
390’24

Up 3.4% since 2020–21.

Who goes here
Hispanic 41%Black 37%White 20%Two or more races 2%Asian <1%

As reported to NCES, share of students with a reported race or ethnicity.

Parents talk

Questions and answers about St. Johns High from Charleston families.

Other schools in Charleston County School District

The district →
Orange Grove Charter School
Elementary · Grades PK–8 · Charleston
A
1,170 students16:1
Jennie Moore Elementary
Elementary · Grades PK–5 · Mt. Pleasant
A
993 students15:1
Ladson Elementary
Elementary · Grades PK–5 · Ladson
C−
907 students14:1
Stiles Point Elementary
Elementary · Grades PK–5 · Charleston
A
866 students17:1
Angel Oak Elementary
Elementary · Grades PK–5 · Johns Island
C+
828 students15:1
Meeting Street Brentwood
Elementary · Grades PK–8 · North Charleston
806 students7:1

School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against South Carolina’s other public schools; Charleston’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.