Irmo High

Irmo High is a mid-sized high school based in Columbia, South Carolina. Its grade span covers grades 9 through 12, with 1,272 students on the rolls. Across high schools in South Carolina, the average enrollment is about 953.

Lexington 05 is the district for Irmo High. It has 22 schools and 17,053 students.

The largest group at Irmo High is Black students, at 58%. Enrollment also includes 23% White, 8% Hispanic, 7% multiracial, and 4% Asian. Among people living in Lexington County, the Black share is about 15%. On a 0 to 100 scale, the school's diversity index is 60, compared with 70 nationally.

The school had 106.7 full-time-equivalent teachers in 2024-25. Its student-to-teacher ratio is 11.9:1. The gap from the 15.5:1 average for high schools in South Carolina is 3.5 students per teacher.

The county, Lexington County, is where the school is located. The median household earns about $77,408 a year, 34% of adults hold a bachelor's degree or higher, and about 9% of people live in poverty. Lexington County has 76 public schools with about 64,555 students, including Irmo High.

Straight-line distance to the nearest public school, Irmo Middle, is about 0.3 miles. Other public schools within five miles: at least 8.

NCES assigns Irmo High the locale Suburb: Large, meaning in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

In 2020-21, Irmo High enrolled 1,216 students. By 2024-25, that number had grown to 1,272.

The Irmo High discussion page is a place for special education services, counseling, and support programs. Teachers and staff are welcome to share updates too.