| Index | Clarksville | Missouri | National |
| Average Test Scores | 51% | 44% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 1,899 | 79,221 |
| Total private schools | n/a | 531 | 24,874 |
| Total post-secondary schools | n/a | 213 | 7,963 |
| Index | Clarksville | Missouri | National |
| Completed 8th grade | 84.7% | 86.0% | 84.3% |
| Completed high school | 78.1% | 84.2% | 83.0% |
| Completed some college | 49.5% | 57.7% | 59.4% |
| Completed associate degree | 27.6% | 35.2% | 38.5% |
| Completed bachelors | 22.1% | 27.6% | 30.3% |
| Completed masters | 3.3% | 10.4% | 11.5% |
| Completed professional degree | 2.2% | 2.8% | 3.3% |
| Completed doctorate | 1.9% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Clarksville. Using the proficiency score averages, the average test scores for Clarksville, MO schools is 51%. The average student to teacher ratio is n/a. In Clarksville, MO, an average of 84.7% of students have completed 8th grade and an average of 78.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Louisiana, MO | 3,248 | 44% | 8.1% |
| Elsberry, MO | 2,024 | 39% | 19.8% |
| Pleasant Hill, IL | 1,122 | 24% | 50.5% |
| Clarksville, MO | 508 | 51% | 5.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Ballico, CA | 508 | 37% | 22.9% |
| Ranburne, AL | 508 | 51% | 6.3% |
| New Auburn, WI | 508 | 35% | 28.1% |
| Towner, ND | 508 | 41% | 14.6% |
| Tremont, MS | 508 | 47% | 2.1% |
| Clarksville, MO | 508 | 51% | 5.7% |
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