| 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 |
| 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 | 22,604 | 70% | 46.0% |
| Crown Point, IN | 30,372 | 68% | 42.6% |
| Dyer, IN | 15,933 | 64% | 33.3% |
| St. John, IN | 18,382 | 64% | 32.3% |
| Schererville, IN | 28,559 | 63% | 30.2% |
| Gary, IN | 75,486 | 21% | 55.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Georgetown, TX | 75,470 | 45% | 5.8% |
| Bethlehem, PA | 75,571 | 49% | 1.4% |
| St. Joseph, MO | 75,369 | 36% | 24.6% |
| Missouri City, TX | 75,348 | 51% | 5.2% |
| Carmichael, CA | 75,642 | 35% | 27.3% |
| Gary, IN | 75,486 | 21% | 55.3% |
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