| Index | Walnut | Illinois | National |
| Average Test Scores | 24% | 33% | 48% |
| Student/Teacher ratio | 20:1 | 18:1 | 16:1 |
| Total public schools | 1 | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Walnut | Illinois | National |
| Completed 8th grade | 91.2% | 86.2% | 84.3% |
| Completed high school | 90.1% | 84.7% | 83.0% |
| Completed some college | 50.7% | 61.8% | 59.4% |
| Completed associate degree | 33.0% | 40.7% | 38.5% |
| Completed bachelors | 24.8% | 32.9% | 30.3% |
| Completed masters | 7.0% | 12.7% | 11.5% |
| Completed professional degree | 3.2% | 3.4% | 3.3% |
| Completed doctorate | 1.7% | 1.2% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Walnut. Using the proficiency score averages, the average test scores for Walnut, IL schools is 24%. The average student to teacher ratio is 20:1. In Walnut, IL, an average of 91.2% of students have completed 8th grade and an average of 90.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Ohio, IL | 509 | 48% | 1.0% |
| Tampico, IL | 771 | 35% | 28.1% |
| Princeton, IL | 7,589 | 33% | 30.9% |
| Manlius, IL | 274 | 32% | 33.3% |
| Rock Falls, IL | 8,914 | 30% | 37.1% |
| Walnut, IL | 1,340 | 24% | 50.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Cleveland, AL | 1,340 | 44% | 8.9% |
| Saxapahaw, NC | 1,340 | 57% | 18.8% |
| Bridgeport, NY | 1,341 | 52% | 8.3% |
| Hemphill, TX | 1,341 | 36% | 24.7% |
| Buttonwillow, CA | 1,339 | 26% | 46.9% |
| Walnut, IL | 1,340 | 24% | 50.0% |
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