| Index | Plain Dealing | Louisiana | National |
| Average Test Scores | 65% | 66% | 48% |
| Student/Teacher ratio | 10:1 | 14:1 | 16:1 |
| Total public schools | 3 | 1,334 | 79,221 |
| Total private schools | 1 | 395 | 24,874 |
| Total post-secondary schools | n/a | 175 | 7,963 |
| Index | Plain Dealing | Louisiana | National |
| Completed 8th grade | 80.2% | 80.2% | 84.3% |
| Completed high school | 79.3% | 78.5% | 83.0% |
| Completed some college | 44.0% | 49.9% | 59.4% |
| Completed associate degree | 24.9% | 28.6% | 38.5% |
| Completed bachelors | 21.9% | 23.0% | 30.3% |
| Completed masters | 6.7% | 7.9% | 11.5% |
| Completed professional degree | 1.1% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.0% | 1.3% |
There are a total of 3 public schools, 1 private schools and n/a post-secondary schools in Plain Dealing. Using the proficiency score averages, the average test scores for Plain Dealing, LA schools is 65%. The average student to teacher ratio is 10:1. In Plain Dealing, LA, an average of 80.2% of students have completed 8th grade and an average of 79.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Belcher, LA | 296 | 94% | 95.8% |
| Benton, LA | 2,124 | 88% | 83.6% |
| Taylor, AR | 875 | 67% | 39.6% |
| Sarepta, LA | 912 | 61% | 26.0% |
| Springhill, LA | 4,851 | 60% | 24.0% |
| Plain Dealing, LA | 1,003 | 65% | 34.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Geraldine, AL | 1,003 | 33% | 32.3% |
| Loup City, NE | 1,004 | 38% | 20.3% |
| Egan, LA | 1,002 | 94% | 94.8% |
| Seaman, OH | 1,002 | 63% | 30.7% |
| Greenville, GA | 1,002 | 19% | 60.9% |
| Plain Dealing, LA | 1,003 | 65% | 34.4% |
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