| Index | Fairfield | Idaho | National |
| Average Test Scores | 49% | 47% | 48% |
| Student/Teacher ratio | n/a | 17:1 | 16:1 |
| Total public schools | n/a | 446 | 79,221 |
| Total private schools | n/a | 83 | 24,874 |
| Total post-secondary schools | n/a | 34 | 7,963 |
| Index | Fairfield | Idaho | National |
| Completed 8th grade | 81.9% | 85.7% | 84.3% |
| Completed high school | 81.2% | 84.8% | 83.0% |
| Completed some college | 42.4% | 62.4% | 59.4% |
| Completed associate degree | 25.8% | 35.6% | 38.5% |
| Completed bachelors | 20.7% | 26.2% | 30.3% |
| Completed masters | 4.4% | 8.4% | 11.5% |
| Completed professional degree | 0.7% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Fairfield. Using the proficiency score averages, the average test scores for Fairfield, ID schools is 49%. The average student to teacher ratio is n/a. In Fairfield, ID, an average of 81.9% of students have completed 8th grade and an average of 81.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Fairfield, ID | 567 | 49% | 1.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Gilmore City, IA | 567 | 55% | 14.6% |
| Springville, CA | 567 | 48% | = 100 |
| Peeples Valley, AZ | 566 | 25% | 47.9% |
| Woodland, AL | 566 | 37% | 22.9% |
| Ansley, NE | 568 | 48% | 1.0% |
| Fairfield, ID | 567 | 49% | 1.0% |
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