| Index | Harmon | 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 |
| Index | Harmon | Illinois | National |
| Completed 8th grade | 83.8% | 86.2% | 84.3% |
| Completed high school | 82.9% | 84.7% | 83.0% |
| Completed some college | 34.2% | 61.8% | 59.4% |
| Completed associate degree | 10.3% | 40.7% | 38.5% |
| Completed bachelors | 2.6% | 32.9% | 30.3% |
| Completed masters | 0.0% | 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 Harmon. Using the proficiency score averages, the average test scores for Harmon, IL schools is n/a. The average student to teacher ratio is n/a. In Harmon, IL, an average of 83.8% of students have completed 8th grade and an average of 82.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Ohio, IL | 509 | 48% | 1.0% |
| Tampico, IL | 771 | 35% | 28.1% |
| Rock Falls, IL | 8,914 | 30% | 37.1% |
| Amboy, IL | 2,453 | 30% | 37.2% |
| Sterling, IL | 14,774 | 28% | 41.7% |
| Harmon, IL | 146 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Crossnore, NC | 146 | 33% | 30.7% |
| Chinese Camp, CA | 146 | 60% | 25.0% |
| Cloverdale, OR | 146 | 42% | 12.5% |
| Downsville, LA | 146 | 69% | 43.8% |
| Port Lions, AK | 145 | 50% | 4.2% |
| Harmon, IL | 146 | n/a |
Here are the best places to live in Illinois
See the best places to live in Harmon
Most Dangerous Cities In The US
These are the 10 cheapest cities in Illinois