St. Johns High
🇺🇸 Official data · 2025Johns Island, South Carolina 29455 · Charleston 01
#117 of 228 high schools in South Carolina
#4714 of 16,910 nationally
About St. Johns High
St. Johns High is a public high located in Johns Island, in the Charleston 01 school district of South Carolina, United States. It caters for Grades 9–12. In 2025 it enrolled 390 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 64.3 out of 100, placing it in the top 50% of high schools in United States and 117th of 228 ranked high schools in South Carolina. Its strongest component is students per teacher (78th percentile), and its weakest is reading proficiency (55th percentile).
Other published figures: enrollment 390.
There are 4 schools in Johns Island; St. Johns High ranks 1st of 4 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)52%
- Reading proficiency (30%)57%
- Community advantage (fewer free/reduced-price lunch) (25%)–
- Students per teacher (15%)11.5
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for St. Johns High by the official sources.
- Enrollment
- 390
- Students enrolled in the latest NCES directory year.
- Students per teacher
- 11.5
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 57%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 52%
- Share of tested students proficient or above (all students, all grades).
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Schools near St. Johns High
Closest schools by straight-line distance, with their Success Index (US).
Angel Oak Elementary
Johns Island · Public elementary · Grades PK–5
828 students · 431 m away
Haut Gap Middle
Johns Island · Public middle · Grades 6–8
412 students · 2.0 km away
Mt. Zion Elementary
Johns Island · Public elementary · Grades PK–5
295 students · 7.3 km away
Oakland Elementary
Charleston · Public elementary · Grades PK–5
556 students · 8.9 km away
Stono Park Elementary
Charleston · Public elementary · Grades PK–5
337 students · 9.8 km away
C. E. Williams Middle School for Creative and Scientific Art
Charleston · Public middle · Grades 6–8
1,299 students · 10 km away
Pattison's Academy for Comprehensive Education
Charleston · Charter other · Grades PK–12
53 students · 10 km away
Carolina Voyager Charter
Charleston · Charter elementary · Grades K–8
402 students · 10 km away
Murray-LaSaine Montessori
Charleston · Public elementary · Grades PK–8
347 students · 11 km away
West Ashley High
Charleston · Public high · Grades 9–12
2,069 students · 11 km away
Similar schools
Public high schools in South Carolina with a comparable Enrollment.
Whale Branch Early College High
Seabrook · Public high · Grades 9–12
390 students
Military Magnet Academy
North Charleston · Public high · Grades 6–12
393 students
J. Paul Truluck Creative Arts and Science Magnet
Lake City · Public high · Grades 7–12
385 students
Calhoun County High
St. Matthews · Public high · Grades 9–12
397 students
Bamberg-Ehrhardt High
Bamberg · Public high · Grades 9–12
383 students
Carvers Bay Early College and Career High
Hemingway · Public high · Grades 9–12
399 students
Frequently asked questions
Is St. Johns High a good school?
St. Johns High has a Success Index (US) of 64.3 out of 100 (Top 50% of high schools in United States) and ranks #117 of 228 in South Carolina. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does St. Johns High rank in South Carolina?
St. Johns High ranks #117 of 228 high schools in South Carolina and #4714 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend St. Johns High?
St. Johns High had 390 students in 2025.
Is St. Johns High a elementary school or a high school?
St. Johns High is classified as a high covering Grades 9–12. It is a public school.
What other schools are near St. Johns High?
There are 10 schools within 15 km of St. Johns High; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.