| Index | Thornhill | Kentucky | National |
| Average Test Scores | n/a | 48% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 1,157 | 79,221 |
| Total private schools | n/a | 298 | 24,874 |
| Total post-secondary schools | n/a | 130 | 7,963 |
| Index | Thornhill | Kentucky | National |
| Completed 8th grade | 98.7% | 81.0% | 84.3% |
| Completed high school | 98.7% | 77.8% | 83.0% |
| Completed some college | 96.2% | 51.3% | 59.4% |
| Completed associate degree | 76.3% | 30.5% | 38.5% |
| Completed bachelors | 72.4% | 22.7% | 30.3% |
| Completed masters | 42.3% | 9.3% | 11.5% |
| Completed professional degree | 19.2% | 2.6% | 3.3% |
| Completed doctorate | 2.6% | 0.9% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Thornhill. Using the proficiency score averages, the average test scores for Thornhill, KY schools is n/a. The average student to teacher ratio is n/a. In Thornhill, KY, an average of 98.7% of students have completed 8th grade and an average of 98.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Anchorage, KY | 2,357 | 86% | 79.2% |
| Goshen, KY | 928 | 74% | 54.5% |
| Prospect, KY | 4,961 | 73% | 51.0% |
| Crestwood, KY | 5,034 | 65% | 35.4% |
| Middletown, KY | 7,885 | 58% | 20.8% |
| Thornhill, KY | 193 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Russian Mission, AK | 193 | 5% | 89.6% |
| Magnolia, MN | 193 | 50% | 4.2% |
| Wilson Creek, WA | 193 | 45% | 6.3% |
| Marquand, MO | 193 | 33% | 32.3% |
| Bronaugh, MO | 193 | 21% | 55.7% |
| Thornhill, KY | 193 | n/a |
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