| Index | Shannon | Illinois | National |
| Average Test Scores | 50% | 33% | 48% |
| Student/Teacher ratio | n/a | 18:1 | 16:1 |
| Total public schools | n/a | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Shannon | Illinois | National |
| Completed 8th grade | 89.1% | 86.2% | 84.3% |
| Completed high school | 86.9% | 84.7% | 83.0% |
| Completed some college | 50.1% | 61.8% | 59.4% |
| Completed associate degree | 27.7% | 40.7% | 38.5% |
| Completed bachelors | 15.7% | 32.9% | 30.3% |
| Completed masters | 6.9% | 12.7% | 11.5% |
| Completed professional degree | 0.4% | 3.4% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Shannon. Using the proficiency score averages, the average test scores for Shannon, IL schools is 50%. The average student to teacher ratio is n/a. In Shannon, IL, an average of 89.1% of students have completed 8th grade and an average of 86.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Chadwick, IL | 529 | 52% | 8.9% |
| Stockton, IL | 1,656 | 47% | 1.7% |
| Lanark, IL | 1,453 | 47% | 2.1% |
| Forreston, IL | 1,392 | 41% | 14.6% |
| Pearl City, IL | 831 | 41% | 15.6% |
| Shannon, IL | 745 | 50% | 3.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Scranton, SC | 745 | 37% | 22.9% |
| Doyle, CA | 745 | 35% | 28.1% |
| Early, IA | 745 | 72% | 50.0% |
| Summerland, CA | 745 | 80% | 66.7% |
| Lanesville, IN | 745 | 53% | 9.4% |
| Shannon, IL | 745 | 50% | 3.1% |
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