| Index | Irmo | South Carolina | National |
| Average Test Scores | 59% | 47% | 48% |
| Student/Teacher ratio | 15:1 | 16:1 | 16:1 |
| Total public schools | 7 | 932 | 79,221 |
| Total private schools | 2 | 369 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
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| Index | Irmo | South Carolina | National |
| Completed 8th grade | 92.0% | 83.0% | 84.3% |
| Completed high school | 92.0% | 81.6% | 83.0% |
| Completed some college | 71.1% | 56.6% | 59.4% |
| Completed associate degree | 47.3% | 35.6% | 38.5% |
| Completed bachelors | 38.3% | 26.5% | 30.3% |
| Completed masters | 13.5% | 9.6% | 11.5% |
| Completed professional degree | 3.0% | 2.5% | 3.3% |
| Completed doctorate | 0.9% | 1.1% | 1.3% |
There are a total of 7 public schools, 2 private schools and n/a post-secondary schools in Irmo. Using the proficiency score averages, the average test scores for Irmo, SC schools is 59%. The average student to teacher ratio is 15:1. In Irmo, SC, an average of 92.0% of students have completed 8th grade and an average of 92.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Chapin, SC | 1,752 | 71% | 47.5% |
| Lexington, SC | 22,445 | 63% | 30.9% |
| Blythewood, SC | 3,758 | 63% | 30.6% |
| Little Mountain, SC | 352 | 61% | 27.1% |
| Pomaria, SC | 120 | 50% | 3.1% |
| Irmo, SC | 12,834 | 59% | 22.6% |
| City | Population | Avg. Test Scores | National Avg. |
| North St. Paul, MN | 12,835 | 44% | 7.9% |
| Winnetka, IL | 12,825 | 73% | 52.3% |
| Boone, IA | 12,825 | 66% | 37.8% |
| Larkspur, CA | 12,843 | 53% | 9.4% |
| Cheney, WA | 12,816 | 53% | 10.7% |
| Irmo, SC | 12,834 | 59% | 22.6% |
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