Very Good
#371 of 1,176 schools in SC
Top 32% in state
St. Johns High
High School · Charleston 01 · Johns Island, SC
A Charleston 01 high school where students score 33 points above what's typical for similar communities.
1518 Main Road, Johns Island, SC 29455
- Math 62% proficient (2022)
- Reading 77% proficient (2022)
- 82.0% 4-year graduation
Academics
Full Profile · 4/4 metricsView breakdown
View breakdown
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Students at St. Johns High score 70% proficient, which is above what's typical for similar communities (expected: 36%).
2022 EdFacts proficiency
Most recent published year. School vs. SC average.
Trend
↑ ImprovingProficiency has improved 15 points since 2019, reaching 70% in 2022, across a 14-year record (2009–2022).
Show all 14 years
Multi-year averages used by the rating model: math 50% (multi-year average, 2009-2022) · reading/ELA 57% (multi-year average, 2009-2022)
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Based on 28 test records from SC state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
100%
Students qualifying for federal meal assistance
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateThe neighborhood
Where St. Johns High sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries.
Getting around & local context
- Walk 8Car-Dependent
- Transit 0Minimal Transit
- Bike 27Somewhat Bikeable
- County Safety: Low220/100K
Powered by
FBI Uniform Crime Reporting · 2024 · county context, not school-level safety or attendance eligibility. Source details
Source period: 2024. A newer release may be available.
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$117,422
Median home value
$499,500
Median rent
$1,489/mo
College educated
56.8%
Homeownership
86.3%
Poverty rate
9.3%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 29455; this is area context, not an attendance boundary.
Programs & students
Programs & Offerings
Compare nearby
Nearby same-level schools
4 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Charleston Collegiate SchoolPrivate · tuition | 7.5private | PK–12 | 2.2 mi | 269 | Compare → |
| Academic Magnet HighEnrollment path unverified | 8.3 | 9–12 | Not available | 718 | Compare → |
| Charleston School of the ArtsEnrollment path unverified | 8.6 | 6–12 | Not available | 1,069 | Compare → |
| James Island Charter HighCharter · enrollment unverified | 9.1 | 9–12 | Not available | 1,597 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Charter · enrollment unverified: Potential charter option; enrollment requirements have not been verified.
Public and private scores come from different models and are shown side by side, not blended into one ranking.
Charleston 01
- Schools in district
- 82
- Rank in district
- #31 of 79
- District spending per student
- $16,635NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 13.8%Census SAIPE · 2024
St. Johns High is listed in Charleston 01; a district label does not verify attendance for an address.
About St. Johns High
St. Johns High is a public high school in Johns Island, SC, part of Charleston 01, serving approximately 423 students in grades 9th-12th with a 14.1:1 student-teacher ratio. It holds a MySchoolScout rating of 7.1 out of 10 and ranks #371 of 1,176 schools in SC.
State assessment records show 50% math proficiency (multi-year average, 2009-2022) and 57% reading/ELA proficiency (multi-year average, 2009-2022).
Frequently asked questions
Common questions about St. Johns High
What grades does St. Johns High serve?
St. Johns High serves students in grades 9th through 12th.
How many students attend St. Johns High?
St. Johns High has an enrollment of approximately 423 students.
What is the student-teacher ratio at St. Johns High?
The student-teacher ratio at St. Johns High is 14.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does St. Johns High rank in SC?
St. Johns High ranks #371 of 1,176 schools in SC.
What is St. Johns High's MySchoolScout rating?
St. Johns High has a current MySchoolScout rating of 7.1 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at St. Johns High?
Based on loaded state assessment records, St. Johns High has 50% math proficiency (multi-year average, 2009-2022) and 57% reading/ELA proficiency (multi-year average, 2009-2022).
Is St. Johns High a charter school?
No, St. Johns High is not a charter school. It is a traditional public school operated by the local school district.
Is St. Johns High a Title I school?
No, St. Johns High is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for St. Johns High?
100.0% of students at St. Johns High qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- 9th – 12th
- Enrollment
- 423
- Student-Teacher Ratio
- 14.1:1
- Teachers (FTE)
- 30
- Type
- regular
- Setting
- Midsize City
- County
- Charleston County
- Chronic Absenteeism (SY 2022-23)
- 47.8%
- Phone
- (843) 559-6200
- 4-Year Graduation
- 82.0%
- Area population (ZIP 29455)
- 26,308
- Area average commute
- 29.6 min
- Area median age
- 51.6
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2022 EdFacts · Low confidence
- Older source: 2022 EdFacts. Use as historical context.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2022 EdFacts · Low confidence
- Older source: 2022 EdFacts. Use as historical context.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 29455; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2022; directory SY 2023–24
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