| Index | Fairfax | Iowa | National |
| Average Test Scores | n/a | 69% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 1,101 | 79,221 |
| Total private schools | n/a | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Fairfax | Iowa | National |
| Completed 8th grade | 95.8% | 89.2% | 84.3% |
| Completed high school | 95.8% | 87.7% | 83.0% |
| Completed some college | 76.8% | 59.8% | 59.4% |
| Completed associate degree | 54.7% | 38.4% | 38.5% |
| Completed bachelors | 40.8% | 27.2% | 30.3% |
| Completed masters | 14.0% | 8.7% | 11.5% |
| Completed professional degree | 2.7% | 2.7% | 3.3% |
| Completed doctorate | 0.4% | 1.1% | 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, IA schools is n/a. The average student to teacher ratio is n/a. In Fairfax, IA, an average of 95.8% of students have completed 8th grade and an average of 95.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Solon, IA | 2,690 | 86% | 78.4% |
| Shellsburg, IA | 806 | 82% | 70.8% |
| Marengo, IA | 2,407 | 81% | 68.2% |
| Robins, IA | 3,510 | 81% | 67.7% |
| Tiffin, IA | 3,779 | 77% | 61.1% |
| Fairfax, IA | 2,770 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Chauvin, LA | 2,771 | 71% | 48.4% |
| Big Lake, AK | 2,769 | 33% | 30.7% |
| Knob Noster, MO | 2,769 | 54% | 12.5% |
| Dallas, PA | 2,769 | 69% | 43.1% |
| Valentine, NE | 2,768 | 57% | 18.3% |
| Fairfax, IA | 2,770 | n/a |
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