| 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 | 22,604 | 70% | 46.0% |
| Crown Point, IN | 30,372 | 68% | 42.6% |
| Valparaiso, IN | 33,707 | 65% | 35.5% |
| Dyer, IN | 15,933 | 64% | 33.3% |
| St. John, IN | 18,382 | 64% | 32.3% |
| Merrillville, IN | 34,871 | 42% | 12.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Brunswick, OH | 34,902 | 77% | 59.5% |
| Englewood, CO | 34,840 | 36% | 25.1% |
| Pleasant Hill, CA | 34,903 | 51% | 6.3% |
| Martinez, GA | 34,912 | 64% | 33.1% |
| Post Falls, ID | 34,971 | 51% | 5.7% |
| Merrillville, IN | 34,871 | 42% | 12.5% |
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