| Index | Cullen | 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 |
| Index | Cullen | Louisiana | National |
| Completed 8th grade | 67.2% | 80.2% | 84.3% |
| Completed high school | 62.2% | 78.5% | 83.0% |
| Completed some college | 38.6% | 49.9% | 59.4% |
| Completed associate degree | 8.9% | 28.6% | 38.5% |
| Completed bachelors | 6.0% | 23.0% | 30.3% |
| Completed masters | 2.1% | 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 Cullen. Using the proficiency score averages, the average test scores for Cullen, LA schools is n/a. The average student to teacher ratio is n/a. In Cullen, LA, an average of 67.2% of students have completed 8th grade and an average of 62.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Cotton Valley, LA | 962 | 67% | 39.6% |
| Taylor, AR | 875 | 67% | 39.6% |
| Plain Dealing, LA | 1,003 | 65% | 34.4% |
| Sarepta, LA | 912 | 61% | 26.0% |
| Springhill, LA | 4,851 | 60% | 24.0% |
| Cullen, LA | 1,166 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Siletz, OR | 1,166 | 26% | 45.8% |
| Chico, TX | 1,166 | 52% | 8.7% |
| Yoncalla, OR | 1,166 | 39% | 19.8% |
| Taylors Falls, MN | 1,166 | 60% | 24.0% |
| Elbow Lake, MN | 1,166 | 77% | 60.4% |
| Cullen, LA | 1,166 | n/a |
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