| Index | Castor | Louisiana | National |
| Average Test Scores | 81% | 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 |

| Index | Castor | Louisiana | National |
| Completed 8th grade | 67.5% | 80.2% | 84.3% |
| Completed high school | 65.6% | 78.5% | 83.0% |
| Completed some college | 33.8% | 49.9% | 59.4% |
| Completed associate degree | 10.2% | 28.6% | 38.5% |
| Completed bachelors | 7.0% | 23.0% | 30.3% |
| Completed masters | 1.3% | 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 Castor. Using the proficiency score averages, the average test scores for Castor, LA schools is 81%. The average student to teacher ratio is n/a. In Castor, LA, an average of 67.5% of students have completed 8th grade and an average of 65.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Saline, LA | 374 | 80% | 65.6% |
| Ringgold, LA | 2,132 | 52% | 8.3% |
| Castor, LA | 310 | 81% | 67.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Weippe, ID | 310 | 40% | 17.2% |
| Tescott, KS | 310 | 35% | 27.1% |
| Shorter, AL | 310 | 22% | 54.2% |
| Nulato, AK | 310 | 20% | 58.3% |
| Trapper Creek, AK | 310 | 50% | 4.2% |
| Castor, LA | 310 | 81% | 67.7% |