St. Johns High

St. Johns High is a public small high school in Johns Island, South Carolina. It enrolled 390 students in grades 9 through 12 for the 2024-25 school year. Statewide, high schools in South Carolina average about 953 students each.

In Charleston 01, 81 schools enroll a combined 52,009 students.

Hispanic students form the largest group at St. Johns High, 41% of enrollment. The remaining shares are 37% Black and 20% White. Census estimates put the Hispanic share of Charleston County's population at about 7%. St. Johns High has a diversity index of 65%, compared with 70% for all US public school students.

Its teaching staff equals 34 full-time positions, a ratio of 11.5:1. For comparison, high schools in South Carolina average 15.5:1.

Charleston County has about 420,264 residents, and median household income is about $88,494, 50% of adults hold a bachelor's degree or higher, and about 7% of people live in poverty. Federal data list 98 public schools in Charleston County, with a combined enrollment of about 55,933.

The closest public school, Angel Oak Elementary, is about 0.3 miles from St. Johns High. Within five miles are 3 other public schools.

St. Johns High falls in the City: Mid-size locale category, used for schools inside a principal city with a population between 100,000 and 250,000.

A comparison of 2020-21 and 2024-25 shows enrollment up 3%, from 377 to 390. The number of students per teacher fell from 13.5 to 11.5 over 4 years.

The allk12 site hosts a discussion page for St. Johns High covering things like enrollment questions, class placement, and PTA news. Posting is open to anyone connected to the school.