| Index | Flanagan | Illinois | National |
| Average Test Scores | 22% | 33% | 48% |
| Student/Teacher ratio | 18:1 | 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 | Flanagan | Illinois | National |
| Completed 8th grade | 85.2% | 86.2% | 84.3% |
| Completed high school | 83.0% | 84.7% | 83.0% |
| Completed some college | 46.8% | 61.8% | 59.4% |
| Completed associate degree | 22.8% | 40.7% | 38.5% |
| Completed bachelors | 15.8% | 32.9% | 30.3% |
| Completed masters | 4.8% | 12.7% | 11.5% |
| Completed professional degree | 1.2% | 3.4% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of 2 public schools, n/a private schools and n/a post-secondary schools in Flanagan. Using the proficiency score averages, the average test scores for Flanagan, IL schools is 22%. The average student to teacher ratio is 18:1. In Flanagan, IL, an average of 85.2% of students have completed 8th grade and an average of 83.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Benson, IL | 460 | 50% | 3.1% |
| El Paso, IL | 2,854 | 48% | 0.5% |
| Gridley, IL | 1,384 | 42% | 13.5% |
| Minonk, IL | 2,007 | 30% | 38.5% |
| Toluca, IL | 1,287 | 27% | 43.8% |
| Flanagan, IL | 949 | 22% | 53.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Moorcroft, WY | 949 | 57% | 19.3% |
| Kenansville, NC | 949 | 51% | 5.7% |
| Magazine, AR | 949 | 42% | 12.5% |
| Wittenberg, WI | 948 | 31% | 35.4% |
| Jasper, MO | 950 | 41% | 15.1% |
| Flanagan, IL | 949 | 22% | 53.6% |
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