| Index | Merrillville | Indiana | National |
| Average Test Scores | 42% | 46% | 48% |
| Student/Teacher ratio | 19:1 | 22:1 | 16:1 |
| Total public schools | 8 | 1,755 | 79,221 |
| Total private schools | 3 | 675 | 24,874 |
| Total post-secondary schools | 7 | 141 | 7,963 |

| Index | Merrillville | Indiana | National |
| Completed 8th grade | 89.6% | 84.6% | 84.3% |
| Completed high school | 88.6% | 82.9% | 83.0% |
| Completed some college | 58.1% | 53.8% | 59.4% |
| Completed associate degree | 31.4% | 33.0% | 38.5% |
| Completed bachelors | 22.7% | 24.6% | 30.3% |
| Completed masters | 7.6% | 8.9% | 11.5% |
| Completed professional degree | 1.4% | 2.4% | 3.3% |
| Completed doctorate | 0.7% | 1.0% | 1.3% |
There are a total of 8 public schools, 3 private schools and 7 post-secondary schools in Merrillville. Using the proficiency score averages, the average test scores for Merrillville, IN schools is 42%. The average student to teacher ratio is 19:1. In Merrillville, IN, an average of 89.6% of students have completed 8th grade and an average of 88.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Munster, IN | 23,103 | 70% | 46.0% |
| Crown Point, IN | 31,396 | 68% | 42.6% |
| Valparaiso, IN | 34,723 | 65% | 35.5% |
| Dyer, IN | 16,417 | 64% | 33.3% |
| St. John, IN | 18,872 | 64% | 32.3% |
| Merrillville, IN | 35,881 | 42% | 12.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Stow, OH | 35,909 | 74% | 53.7% |
| Riviera Beach, FL | 35,972 | 43% | 11.1% |
| Pleasant Hill, CA | 35,995 | 51% | 6.3% |
| Owings Mills, MD | 35,995 | 29% | 40.6% |
| Brunswick, OH | 35,761 | 77% | 59.5% |
| Merrillville, IN | 35,881 | 42% | 12.5% |