| Index | Niantic | Illinois | National |
| Average Test Scores | 37% | 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 |

| Index | Niantic | Illinois | National |
| Completed 8th grade | 82.4% | 86.2% | 84.3% |
| Completed high school | 82.4% | 84.7% | 83.0% |
| Completed some college | 44.6% | 61.8% | 59.4% |
| Completed associate degree | 23.7% | 40.7% | 38.5% |
| Completed bachelors | 20.9% | 32.9% | 30.3% |
| Completed masters | 7.1% | 12.7% | 11.5% |
| Completed professional degree | 0.0% | 3.4% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Niantic. Using the proficiency score averages, the average test scores for Niantic, IL schools is 37%. The average student to teacher ratio is n/a. In Niantic, IL, an average of 82.4% of students have completed 8th grade and an average of 82.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Stonington, IL | 686 | 50% | 4.2% |
| Forsyth, IL | 3,591 | 48% | 1.0% |
| Mount Zion, IL | 5,927 | 44% | 8.9% |
| Maroa, IL | 2,025 | 40% | 17.2% |
| Illiopolis, IL | 792 | 38% | 20.3% |
| Niantic, IL | 680 | 37% | 22.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Loa, UT | 680 | 42% | 12.5% |
| Heuvelton, NY | 680 | 50% | 4.2% |
| Alma, WI | 680 | 40% | 17.2% |
| Metamora, MI | 680 | 60% | 24.0% |
| Mount Victory, OH | 680 | 58% | 21.4% |
| Niantic, IL | 680 | 37% | 22.9% |