| Index | Fairfax | Missouri | National |
| Average Test Scores | 53% | 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 |
| Index | Fairfax | Missouri | National |
| Completed 8th grade | 83.6% | 86.0% | 84.3% |
| Completed high school | 82.0% | 84.2% | 83.0% |
| Completed some college | 44.0% | 57.7% | 59.4% |
| Completed associate degree | 25.2% | 35.2% | 38.5% |
| Completed bachelors | 17.6% | 27.6% | 30.3% |
| Completed masters | 3.1% | 10.4% | 11.5% |
| Completed professional degree | 0.6% | 2.8% | 3.3% |
| Completed doctorate | 0.4% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Fairfax. Using the proficiency score averages, the average test scores for Fairfax, MO schools is 53%. The average student to teacher ratio is n/a. In Fairfax, MO, an average of 83.6% of students have completed 8th grade and an average of 82.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Rock Port, MO | 1,335 | 67% | 39.6% |
| Mound City, MO | 1,150 | 62% | 28.1% |
| Craig, MO | 137 | 50% | 4.2% |
| Tarkio, MO | 1,481 | 45% | 7.3% |
| Fairfax, MO | 695 | 53% | 9.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Stanford, IL | 695 | 31% | 35.4% |
| Roachdale, IN | 695 | 59% | 23.6% |
| Round Hill, VA | 695 | 90% | 86.5% |
| Cambria, WI | 695 | 35% | 28.1% |
| Aguanga, CA | 696 | 47% | 2.1% |
| Fairfax, MO | 695 | 53% | 9.4% |
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