Irmo High School is a public high school in unincorporated Lexington County, South Carolina, United States, with a Columbia postal address. Irmo High School falls under the administrative jurisdiction of District 5 of Lexington and Richland Counties. It is an International Baccalaureate school.
Serving 1,272 students in grades 9-12, Irmo High School ranks in the top 30% of all schools in South Carolina for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 42% (which is lower than the South Carolina state average of 43%). The percentage of students achieving proficiency in reading/language arts is 80% (which is higher than the South Carolina state average of 52%).
The student-teacher ratio of 12:1 is lower than the South Carolina state level of 14:1.
Minority enrollment is 77% of the student body (majority Black), which is higher than the South Carolina state average of 54% (majority Black).
Quick Facts (2026)
- School Type: Magnet School
- Grades: 9-12
- Enrollment: 1,272 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 77%
- Graduation Rate: 81% (Btm 50% in SC)
- Overall Testing Rank: Top 30%
- Math Proficiency: 42% (Top 50%)
- Reading Proficiency: 80% (Top 20%)
- Science Proficiency: 48% (Top 50%)
- Source: National Center for Education Statistics (NCES), SC Dept. of Education
Top Rankings
Irmo High School ranks among the top 20% of public schools in South Carolina for:
Category
Attribute
Reading/Language Arts Proficiency
Percent Eligible For Free Lunch
Student Attention
School Overview
Irmo High School's student population of 1,272 students has stayed relatively flat over five school years.
The teacher population of 107 teachers has grown by 5% over five school years.
School Type
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
1,272 students
Total Classroom Teachers
107 teachers
Year Founded
1928
Colors
Blue and Gold
School Motto
We Love and Grow Our Students!
Average Class Size
15 students
School Rankings
Irmo High School ranks within the top 30% of all 1,118 schools in South Carolina (based off of combined math and reading proficiency testing data).
The diversity score of Irmo High School is 0.61, which is less than the diversity score at state average of 0.67. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#335 out of 1118 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
42%
43%
Reading/Language Arts Test Scores (% Proficient)
80%
52%
Science Test Scores (% Proficient)
48%
50%
Student-Teacher Ratio
12:1
14:1
Asian
4%
2%
Hispanic
8%
15%
Black
58%
31%
White
23%
46%
Hawaiian
1%
n/a
Two or more races
6%
6%
All Ethnic Groups
Graduation Rate
81%
84%
Chronically Absent Students
(22-23)35.5%
25.2%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
59%
50%
Eligible for Reduced Lunch
9%
3%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), SC Dept. of Education
School Notes
- School Mascot: Yellowjacket
Frequently Asked Questions
What is Irmo High School's ranking?
Irmo High School is ranked #335 out of 1,118 schools, which ranks it among the top 30% of public schools in South Carolina.
What percent of students have achieved state testing proficiency in math and reading?
42% of students have achieved math proficiency (compared to the 43% SC state average), while 80% of students have achieved reading proficiency (compared to the 52% SC state average).
What is the graduation rate of Irmo High School?
The graduation rate of Irmo High School is 81%, which is lower than the South Carolina state average of 84%.
How many students attend Irmo High School?
1,272 students attend Irmo High School.
What is the racial composition of the student body?
58% of Irmo High School students are Black, 23% of students are White, 8% of students are Hispanic, 6% of students are Two or more races, 4% of students are Asian, and 1% of students are Hawaiian.
What is the student-teacher ratio of Irmo High School?
Irmo High School has a student ration of 12:1, which is lower than the South Carolina state average of 14:1.
What grades does Irmo High School offer ?
Irmo High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Irmo High School part of?
Irmo High School is part of Lexington 05 School District.
School Reviews
2 10/10/2025
The teachers are a pack of biased burnouts who all need to be fired. They care nothing about educating the students; they just keep passing people to get them out of the system. Horrible, horrible school.
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