| Index | Quincy | Illinois | National |
| Average Test Scores | 28% | 33% | 48% |
| Student/Teacher ratio | 16:1 | 18:1 | 16:1 |
| Total public schools | 20 | 3,938 | 79,221 |
| Total private schools | 11 | 1,438 | 24,874 |
| Total post-secondary schools | 5 | 306 | 7,963 |


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| Index | Quincy | Illinois | National |
| Completed 8th grade | 87.6% | 86.2% | 84.3% |
| Completed high school | 86.4% | 84.7% | 83.0% |
| Completed some college | 56.2% | 61.8% | 59.4% |
| Completed associate degree | 31.3% | 40.7% | 38.5% |
| Completed bachelors | 23.8% | 32.9% | 30.3% |
| Completed masters | 8.0% | 12.7% | 11.5% |
| Completed professional degree | 1.9% | 3.4% | 3.3% |
| Completed doctorate | 0.9% | 1.2% | 1.3% |
There are a total of 20 public schools, 11 private schools and 5 post-secondary schools in Quincy. Using the proficiency score averages, the average test scores for Quincy, IL schools is 28%. The average student to teacher ratio is 16:1. In Quincy, IL, an average of 87.6% of students have completed 8th grade and an average of 86.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Palmyra, MO | 3,744 | 47% | 1.7% |
| Liberty, IL | 407 | 41% | 15.1% |
| Canton, MO | 2,545 | 40% | 17.7% |
| Payson, IL | 1,427 | 25% | 49.0% |
| Mendon, IL | 1,115 | 23% | 52.8% |
| Quincy, IL | 41,163 | 28% | 41.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Romeoville, IL | 41,178 | 36% | 24.1% |
| Calexico, CA | 41,129 | 26% | 46.2% |
| La Puente, CA | 41,123 | 38% | 21.8% |
| Marion, IA | 41,096 | 77% | 59.8% |
| Hilton Head Island, SC | 41,077 | 57% | 18.2% |
| Quincy, IL | 41,163 | 28% | 41.8% |