| Index | Clarksburg | Missouri | National |
| Average Test Scores | 45% | 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 | Clarksburg | Missouri | National |
| Completed 8th grade | 70.6% | 86.0% | 84.3% |
| Completed high school | 66.9% | 84.2% | 83.0% |
| Completed some college | 38.2% | 57.7% | 59.4% |
| Completed associate degree | 14.7% | 35.2% | 38.5% |
| Completed bachelors | 12.5% | 27.6% | 30.3% |
| Completed masters | 2.2% | 10.4% | 11.5% |
| Completed professional degree | 0.7% | 2.8% | 3.3% |
| Completed doctorate | 0.7% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Clarksburg. Using the proficiency score averages, the average test scores for Clarksburg, MO schools is 45%. The average student to teacher ratio is n/a. In Clarksburg, MO, an average of 70.6% of students have completed 8th grade and an average of 66.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Russellville, MO | 832 | 51% | 6.9% |
| Jamestown, MO | 382 | 51% | 6.3% |
| California, MO | 4,411 | 51% | 5.2% |
| Pilot Grove, MO | 666 | 47% | 3.1% |
| Bunceton, MO | 339 | 43% | 11.5% |
| Clarksburg, MO | 280 | 45% | 6.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Buffalo, SD | 280 | 57% | 18.1% |
| Arlington, IN | 280 | 60% | 24.0% |
| Quitman, LA | 281 | 67% | 38.5% |
| Harrison, ID | 279 | 38% | 21.9% |
| Copper Center, AK | 281 | 55% | 14.6% |
| Clarksburg, MO | 280 | 45% | 6.3% |
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