| Index | Gary | Indiana | National |
| Average Test Scores | 21% | 46% | 48% |
| Student/Teacher ratio | 18:1 | 22:1 | 16:1 |
| Total public schools | 46 | 1,755 | 79,221 |
| Total private schools | 7 | 675 | 24,874 |
| Total post-secondary schools | 3 | 141 | 7,963 |
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| Index | Gary | Indiana | National |
| Completed 8th grade | 81.3% | 84.6% | 84.3% |
| Completed high school | 79.6% | 82.9% | 83.0% |
| Completed some college | 48.0% | 53.8% | 59.4% |
| Completed associate degree | 21.4% | 33.0% | 38.5% |
| Completed bachelors | 12.7% | 24.6% | 30.3% |
| Completed masters | 4.9% | 8.9% | 11.5% |
| Completed professional degree | 1.0% | 2.4% | 3.3% |
| Completed doctorate | 0.4% | 1.0% | 1.3% |
There are a total of 46 public schools, 7 private schools and 3 post-secondary schools in Gary. Using the proficiency score averages, the average test scores for Gary, IN schools is 21%. The average student to teacher ratio is 18:1. In Gary, IN, an average of 81.3% of students have completed 8th grade and an average of 79.6% 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% |
| Dyer, IN | 16,417 | 64% | 33.3% |
| St. John, IN | 18,872 | 64% | 32.3% |
| Schererville, IN | 29,136 | 63% | 30.2% |
| Gary, IN | 77,151 | 21% | 55.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Centreville, VA | 77,124 | 78% | 61.7% |
| Rancho Cordova, CA | 77,119 | 38% | 21.7% |
| Milpitas, CA | 77,004 | 61% | 26.9% |
| Missoula, MT | 77,349 | 53% | 11.1% |
| Rock Hill, SC | 76,923 | 45% | 5.8% |
| Gary, IN | 77,151 | 21% | 55.3% |
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