| Index | Fairbury | Illinois | National |
| Average Test Scores | 39% | 33% | 48% |
| Student/Teacher ratio | 14:1 | 18:1 | 16:1 |
| Total public schools | 2 | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Fairbury | Illinois | National |
| Completed 8th grade | 90.3% | 86.2% | 84.3% |
| Completed high school | 87.2% | 84.7% | 83.0% |
| Completed some college | 50.7% | 61.8% | 59.4% |
| Completed associate degree | 26.3% | 40.7% | 38.5% |
| Completed bachelors | 18.6% | 32.9% | 30.3% |
| Completed masters | 10.3% | 12.7% | 11.5% |
| Completed professional degree | 2.4% | 3.4% | 3.3% |
| Completed doctorate | 1.3% | 1.2% | 1.3% |
There are a total of 2 public schools, n/a private schools and n/a post-secondary schools in Fairbury. Using the proficiency score averages, the average test scores for Fairbury, IL schools is 39%. The average student to teacher ratio is 14:1. In Fairbury, IL, an average of 90.3% of students have completed 8th grade and an average of 87.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Kempton, IL | 317 | 50% | 4.2% |
| Forrest, IL | 995 | 46% | 3.6% |
| Lexington, IL | 2,049 | 36% | 24.3% |
| Colfax, IL | 1,088 | 27% | 43.4% |
| Saunemin, IL | 398 | 27% | 43.8% |
| Fairbury, IL | 3,604 | 39% | 18.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Delta, UT | 3,604 | 52% | 7.6% |
| Frederick, OK | 3,604 | 38% | 20.8% |
| Mullica Hill, NJ | 3,605 | 66% | 37.0% |
| Lillington, NC | 3,605 | 31% | 36.5% |
| Saluda, SC | 3,603 | 42% | 11.7% |
| Fairbury, IL | 3,604 | 39% | 18.2% |
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