| Index | Irena | Missouri | National |
| Average Test Scores | n/a | 44% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 1,899 | 79,221 |
| Total private schools | n/a | 531 | 24,874 |
| Total post-secondary schools | n/a | 213 | 7,963 |
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| Index | Irena | Missouri | National |
| Completed 8th grade | 100.0% | 86.0% | 84.3% |
| Completed high school | 100.0% | 84.2% | 83.0% |
| Completed some college | 50.0% | 57.7% | 59.4% |
| Completed associate degree | 50.0% | 35.2% | 38.5% |
| Completed bachelors | 35.7% | 27.6% | 30.3% |
| Completed masters | 35.7% | 10.4% | 11.5% |
| Completed professional degree | 7.1% | 2.8% | 3.3% |
| Completed doctorate | 7.1% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Irena. Using the proficiency score averages, the average test scores for Irena, MO schools is n/a. The average student to teacher ratio is n/a. In Irena, MO, an average of 100.0% of students have completed 8th grade and an average of 100.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Mount Ayr, IA | 1,988 | 83% | 73.4% |
| Ravenwood, MO | 548 | 42% | 13.0% |
| Grant City, MO | 1,010 | 35% | 28.1% |
| Irena, MO | 10 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Blanchard, ND | 10 | 50% | 4.2% |
| San Antonio, NM | 9 | 25% | 47.9% |
| Platinum, AK | 8 | 50% | 4.2% |
| Hyder, AK | 12 | 50% | 4.2% |
| Wide Ruins, AZ | 6 | 10% | 79.2% |
| Irena, MO | 10 | n/a |
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