| Index | Opdyke | Illinois | National |
| Average Test Scores | 42% | 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 | Opdyke | Illinois | National |
| Completed 8th grade | 91.1% | 86.2% | 84.3% |
| Completed high school | 91.1% | 84.7% | 83.0% |
| Completed some college | 63.3% | 61.8% | 59.4% |
| Completed associate degree | 39.9% | 40.7% | 38.5% |
| Completed bachelors | 16.5% | 32.9% | 30.3% |
| Completed masters | 1.9% | 12.7% | 11.5% |
| Completed professional degree | 0.0% | 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 Opdyke. Using the proficiency score averages, the average test scores for Opdyke, IL schools is 42%. The average student to teacher ratio is n/a. In Opdyke, IL, an average of 91.1% of students have completed 8th grade and an average of 91.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Dahlgren, IL | 699 | 52% | 8.3% |
| Ewing, IL | 320 | 47% | 2.1% |
| McLeansboro, IL | 2,539 | 39% | 19.3% |
| Woodlawn, IL | 555 | 36% | 26.0% |
| Bluford, IL | 662 | 34% | 29.2% |
| Opdyke, IL | 303 | 42% | 12.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Halfway, OR | 303 | 57% | 18.8% |
| Caney, OK | 303 | 32% | 32.8% |
| Markleysburg, PA | 303 | 57% | 18.8% |
| Noble, LA | 303 | 60% | 24.0% |
| Milligan, NE | 303 | 50% | 4.2% |
| Opdyke, IL | 303 | 42% | 12.5% |
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