| Index | Clarks | Louisiana | National |
| Average Test Scores | n/a | 66% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 1,334 | 79,221 |
| Total private schools | n/a | 395 | 24,874 |
| Total post-secondary schools | n/a | 175 | 7,963 |
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| Index | Clarks | Louisiana | National |
| Completed 8th grade | 45.2% | 80.2% | 84.3% |
| Completed high school | 36.3% | 78.5% | 83.0% |
| Completed some college | 21.7% | 49.9% | 59.4% |
| Completed associate degree | 6.0% | 28.6% | 38.5% |
| Completed bachelors | 0.9% | 23.0% | 30.3% |
| Completed masters | 0.4% | 7.9% | 11.5% |
| Completed professional degree | 0.0% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.0% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Clarks. Using the proficiency score averages, the average test scores for Clarks, LA schools is n/a. The average student to teacher ratio is n/a. In Clarks, LA, an average of 45.2% of students have completed 8th grade and an average of 36.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Urania, LA | 1,471 | 85% | 76.0% |
| Olla, LA | 1,912 | 71% | 47.9% |
| Grayson, LA | 568 | 67% | 39.6% |
| Columbia, LA | 514 | 64% | 33.9% |
| Clarks, LA | 596 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Delton, MI | 596 | 36% | 25.0% |
| St. James, LA | 596 | 81% | 67.7% |
| Radcliffe, IA | 596 | 80% | 65.6% |
| Allensworth, CA | 596 | 15% | 68.8% |
| Dudley, GA | 596 | 64% | 33.3% |
| Clarks, LA | 596 | n/a |
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