St. Johns High School
| Name | St. Johns High School |
| Grades | Class 09 to Class 12 |
| Address | 1518 Main Road |
| City | Johns Island |
| School District | Charleston 01 |
| County | Charleston County |
| Zipcode | 29455 |
| Phone No. | (843)559-6400 |
| State | South Carolina |
| City | Midsize |
| Students | 377 |
| Teachers | 28 |
| Student Teacher Ratio | 13.5 students per teacher |
| Charter School | No |
| Magnet School | No |
St. Johns High School is located at 1518 Main Road in Johns Island city of Charleston County county in South Carolina. This school comes under Charleston 01. You can call them at (843)559-6400 for more details. This is not a magnet school. Total three hundred seventy seven students from class 09 to class 12 study in this school who are taught by twenty eight teachers. This is not a charter school. The student teacher ratio of this school is 13.5.