| Index | Marengo | Illinois | National |
| Average Test Scores | 44% | 33% | 48% |
| Student/Teacher ratio | 27:1 | 18:1 | 16:1 |
| Total public schools | 4 | 3,938 | 79,221 |
| Total private schools | 1 | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Marengo | Illinois | National |
| Completed 8th grade | 87.0% | 86.2% | 84.3% |
| Completed high school | 84.5% | 84.7% | 83.0% |
| Completed some college | 53.3% | 61.8% | 59.4% |
| Completed associate degree | 27.0% | 40.7% | 38.5% |
| Completed bachelors | 20.2% | 32.9% | 30.3% |
| Completed masters | 7.3% | 12.7% | 11.5% |
| Completed professional degree | 0.7% | 3.4% | 3.3% |
| Completed doctorate | 0.2% | 1.2% | 1.3% |
There are a total of 4 public schools, 1 private schools and n/a post-secondary schools in Marengo. Using the proficiency score averages, the average test scores for Marengo, IL schools is 44%. The average student to teacher ratio is 27:1. In Marengo, IL, an average of 87.0% of students have completed 8th grade and an average of 84.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Burlington, IL | 514 | 54% | 12.5% |
| Huntley, IL | 27,413 | 50% | 3.6% |
| Sleepy Hollow, IL | 3,276 | 50% | 3.1% |
| Algonquin, IL | 30,848 | 48% | 0.9% |
| Crystal Lake, IL | 39,685 | 46% | 3.9% |
| Marengo, IL | 7,871 | 44% | 8.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Lake Geneva, WI | 7,872 | 51% | 6.5% |
| Lampasas, TX | 7,869 | 49% | 1.8% |
| Woodlawn CDP (Prince George's County), MD | 7,873 | 16% | 67.7% |
| Santa Clara, UT | 7,868 | 47% | 1.7% |
| Dexter, MO | 7,867 | 45% | 5.9% |
| Marengo, IL | 7,871 | 44% | 8.5% |
Here are the best places to live in Illinois
Safest Cities In The US
Check out the 10 safest cities in Illinois
Check out the 10 most dangerous cities in Illinois