| Index | Allendale | 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 | Allendale | Illinois | National |
| Completed 8th grade | 86.8% | 86.2% | 84.3% |
| Completed high school | 84.8% | 84.7% | 83.0% |
| Completed some college | 55.5% | 61.8% | 59.4% |
| Completed associate degree | 29.9% | 40.7% | 38.5% |
| Completed bachelors | 10.4% | 32.9% | 30.3% |
| Completed masters | 2.5% | 12.7% | 11.5% |
| Completed professional degree | 0.5% | 3.4% | 3.3% |
| Completed doctorate | 0.5% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Allendale. Using the proficiency score averages, the average test scores for Allendale, IL schools is 42%. The average student to teacher ratio is n/a. In Allendale, IL, an average of 86.8% of students have completed 8th grade and an average of 84.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Francisco, IN | 541 | 65% | 35.4% |
| Sumner, IL | 2,916 | 45% | 7.3% |
| Vincennes, IN | 17,091 | 43% | 9.5% |
| Princeton, IN | 8,716 | 42% | 12.2% |
| Mount Carmel, IL | 6,922 | 34% | 30.2% |
| Allendale, IL | 655 | 42% | 12.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Mohall, ND | 655 | 58% | 21.4% |
| Hardin, MO | 655 | 45% | 6.8% |
| Elizabeth, LA | 656 | 74% | 53.1% |
| Unionville, MI | 654 | 42% | 12.5% |
| Dundee, OH | 654 | 81% | 68.8% |
| Allendale, IL | 655 | 42% | 12.5% |
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