- Enrollment
- 1,703
- Students per teacher
- 14.3:1
- Resource Index
- 50/100
High school (grades 9-12) · Columbia, SC
Irmo High
Federal NCES profile for Irmo High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 49/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 450282000759
👥 S:T ratio 52
🌟 Gifted program 70
🎓 Counselors 49
📋 Attendance 23
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Irmo High earns 49/100 on the Resource Investment Index, with class sizes smaller than 80% of South Carolina schools.
- #4 of 15
- high schools in Columbia · Resource Index
- 49
- Resource Index · Higher
- 11.9:1
- small classes for South Carolina
- 100.0%
- free-lunch eligible
Irmo High has class sizes smaller than 80% of South Carolina schools. Computed live against every South Carolina school reporting to NCES.
By Resource Investment Index, Irmo High ranks #4 of 15 high schools in Columbia, SC.
School address
District: Lexington 05 · South Carolina
NCES ID 450282000759 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-39 students YoY
Irmo High held near 1,268 students from 2022-23 to 2023-24 (-39 headcount).
Teacher FTE lost 107.7 → 104.7 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-39 students YoY 450282000759 · Columbia, SC High · MID · TRAD
1,272 enr · 11.9:1 · 100.0% lunch · RII 49
Nearest enrollment peer: Dutch Fork High (1,703 students)
Irmo High held near 1,268 students from 2022-23 to 2023-24 (-39 headcount). Teacher FTE lost 107.7 → 104.7 across the same CCD years. Read with this school → · District book → · South Carolina schools → · Find another →
Irmo High in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Dutch Fork Hig
Dutch Fork High
1,703 students
- Chapin High
Chapin High
1,617 students
- This school
Irmo High
1,272 students
- Spring Hill Hi
Spring Hill High
1,118 students
- Chapin Middle
Chapin Middle
1,007 students
- Irmo Middle
Irmo Middle
992 students
What this shows Irmo High reports 1,272 students on the CCD universe file.
How Irmo High compares
Irmo High held steady on CCD headcount: ratios and free-lunch share vs South Carolina and U.S. means.
| Metric | This school | vs South Carolina | South Carolina avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 11.9:1 | ▼ 17% | 14.3:1 | 15.7:1 |
| Free-lunch eligible | 100.0% | ▲ 35% | 74.0% | 51.7% |
| Enrollment | 1,272 | top 7% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.9:1
Leaner classes than 76% of US schools, among the more generously staffed nationally.
1,272
Bigger than 95% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
100.0%
free-lunch eligible
- 35% above the South Carolina average of 74.0%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
11.9:1
students per teacher
- 17% below state mean
Top 20% in South Carolina - lower ratio than 80% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
30.8%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$14,799
per pupil, district-wide
- below South Carolina avg of $15,911
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors5.0 FTE
Per 254 students, the combined health-and-guidance staffing load for this school.
Discipline context
206
in-school suspensions + 223 out-of-school
Suspension rate: 16.2 per 100 students. Combined in-school and out-of-school rate: 33.7 per 100 students. Reported via the Civil Rights Data Collection. Includes 51 expulsions.
Student demographics
African American 57.5%
White 23.3%
Hispanic or Latino 7.9%
Two or More 6.5%
Asian 3.7%
Native Hawaiian / Pacific Islander 0.9%
American Indian / Alaska Native 0.2%
Largest group: African American at 57.5% of enrollment.
Student-body diversity index 60.3/100
Simpson diversity index - at 60.3, Irmo High is more mixed than the South Carolina school average of 52.7.
Programs
AP courses offered 11
Gifted & talented Yes
District finance for Lexington 05 reports $14,799 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Irmo High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Dutch Fork High | Larger | Lower economic need | Higher S:T ratio |
| Chapin High | Larger | Similar economic need | Higher S:T ratio |
| Spring Hill High | Similar size | Lower economic need | Similar S:T ratio |
| Chapin Middle | Similar size | Lower economic need | Higher S:T ratio |
| Irmo Middle | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Irmo High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,617
- Students per teacher
- 15.5:1
- Resource Index
- 52/100
- Enrollment
- 1,118
- Students per teacher
- 12.3:1
- Resource Index
- 60/100
- Enrollment
- 1,007
- Students per teacher
- 14.2:1
- Resource Index
- 54/100
- Enrollment
- 992
- Students per teacher
- 11:1
- Resource Index
- 54/100
Similar high schools in Columbia
6 comparable high schools (grades 9-12) serving the same city.
Spring Valley High
Standard public school
2,230 students 18.3:1 students per teacher
Ridge View High
Standard public school
1,631 students 17.9:1 students per teacher
Richland Northeast High
Standard public school
1,340 students 14.1:1 students per teacher
A. C. Flora High
Standard public school
1,328 students 15.8:1 students per teacher
Dreher High
Standard public school
1,144 students 14.7:1 students per teacher
Columbia High
Standard public school
681 students 13.9:1 students per teacher
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~1,272 students)
Frequently asked questions about Irmo High
How many students attend Irmo High?
Irmo High has 1,272 students enrolled. It is a high school in Columbia, SC. CCD year-over-year: 1,307 (2022-23) → 1,268 (2023-24), nearly flat (-39).
What is the student-teacher ratio at Irmo High?
The student-teacher ratio at Irmo High is 11.9:1, which is 17% lower than the South Carolina average of 14.3:1 and 24% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Irmo High?
100.0% of students at Irmo High are eligible for free lunch, compared to the South Carolina average of 74.0%.
What is the racial and ethnic makeup of Irmo High?
The largest demographic group at Irmo High is African American at 57.5% of enrollment, in Columbia, SC. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 60.3/100.
What is the Resource Investment Index for Irmo High?
Irmo High has a Resource Investment Index of 49/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Irmo High rank among high schools in Columbia?
By Resource Investment Index, Irmo High ranks #4 of 15 high schools in Columbia, SC. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Columbia on the city page.
What other schools are in Lexington 05?
Besides Irmo High, Lexington 05 also operates Dutch Fork High (1,703 students), Chapin High (1,617 students), and Spring Hill High (1,118 students). See the Lexington 05 district page for the complete list.