| Index | Delavan | Illinois | National |
| Average Test Scores | 34% | 33% | 48% |
| Student/Teacher ratio | 11:1 | 18:1 | 16:1 |
| Total public schools | 3 | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Delavan | Illinois | National |
| Completed 8th grade | 90.9% | 86.2% | 84.3% |
| Completed high school | 90.9% | 84.7% | 83.0% |
| Completed some college | 54.0% | 61.8% | 59.4% |
| Completed associate degree | 29.1% | 40.7% | 38.5% |
| Completed bachelors | 19.2% | 32.9% | 30.3% |
| Completed masters | 4.5% | 12.7% | 11.5% |
| Completed professional degree | 0.7% | 3.4% | 3.3% |
| Completed doctorate | 0.7% | 1.2% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Delavan. Using the proficiency score averages, the average test scores for Delavan, IL schools is 34%. The average student to teacher ratio is 11:1. In Delavan, IL, an average of 90.9% of students have completed 8th grade and an average of 90.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Tremont, IL | 2,261 | 52% | 8.7% |
| Mackinaw, IL | 1,970 | 47% | 1.6% |
| Minier, IL | 1,090 | 45% | 7.3% |
| Emden, IL | 398 | 40% | 16.7% |
| Glasford, IL | 897 | 38% | 21.2% |
| Delavan, IL | 1,708 | 34% | 29.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Mancelona, MI | 1,708 | 39% | 19.3% |
| Garrison, ND | 1,708 | 35% | 28.1% |
| Santa Clara, NM | 1,708 | 27% | 43.8% |
| Ripley, OH | 1,707 | 51% | 5.7% |
| Mazomanie, WI | 1,709 | 47% | 1.7% |
| Delavan, IL | 1,708 | 34% | 29.2% |
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