| Index | Preston Heights | Illinois | National |
| Average Test Scores | n/a | 33% | 48% |
| Student/Teacher ratio | n/a | 18:1 | 16:1 |
| Total public schools | n/a | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |


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| Index | Preston Heights | Illinois | National |
| Completed 8th grade | 75.2% | 86.2% | 84.3% |
| Completed high school | 72.8% | 84.7% | 83.0% |
| Completed some college | 36.9% | 61.8% | 59.4% |
| Completed associate degree | 14.2% | 40.7% | 38.5% |
| Completed bachelors | 10.7% | 32.9% | 30.3% |
| Completed masters | 3.1% | 12.7% | 11.5% |
| Completed professional degree | 0.7% | 3.4% | 3.3% |
| Completed doctorate | 0.3% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Preston Heights. Using the proficiency score averages, the average test scores for Preston Heights, IL schools is n/a. The average student to teacher ratio is n/a. In Preston Heights, IL, an average of 75.2% of students have completed 8th grade and an average of 72.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Palos Park, IL | 4,875 | 61% | 26.6% |
| Frankfort, IL | 19,886 | 56% | 16.3% |
| Homer Glen, IL | 25,242 | 55% | 14.6% |
| Manhattan, IL | 8,415 | 54% | 12.5% |
| Palos Hills, IL | 17,664 | 53% | 9.9% |
| Preston Heights, IL | 2,583 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Pawnee, IL | 2,583 | 33% | 30.7% |
| Eastpoint, FL | 2,582 | 35% | 28.1% |
| Nekoosa, WI | 2,584 | 34% | 29.8% |
| Carthage, NC | 2,587 | 38% | 20.8% |
| Lake Crystal, MN | 2,587 | 60% | 24.0% |
| Preston Heights, IL | 2,583 | n/a |