| Index | O'Brien | Texas | National |
| Average Test Scores | 42% | 47% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 7,418 | 79,221 |
| Total private schools | n/a | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | O'Brien | Texas | National |
| Completed 8th grade | 58.0% | 79.3% | 84.3% |
| Completed high school | 55.6% | 77.8% | 83.0% |
| Completed some college | 43.2% | 57.3% | 59.4% |
| Completed associate degree | 22.2% | 34.9% | 38.5% |
| Completed bachelors | 19.8% | 28.1% | 30.3% |
| Completed masters | 2.5% | 9.6% | 11.5% |
| Completed professional degree | 0.0% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in O'Brien. Using the proficiency score averages, the average test scores for O'Brien, TX schools is 42%. The average student to teacher ratio is n/a. In O'Brien, TX, an average of 58.0% of students have completed 8th grade and an average of 55.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Benjamin, TX | 238 | 55% | 13.5% |
| Munday, TX | 1,253 | 45% | 5.7% |
| Knox City, TX | 1,100 | 43% | 11.5% |
| Rule, TX | 694 | 40% | 17.7% |
| O'Brien, TX | 121 | 42% | 12.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Grass Range, MT | 121 | 55% | 14.6% |
| Elizabeth, IN | 121 | 51% | 6.3% |
| Perrin, TX | 122 | 37% | 22.9% |
| Tar Heel, NC | 122 | 27% | 44.3% |
| Roy, MT | 120 | 50% | 4.2% |
| O'Brien, TX | 121 | 42% | 12.5% |
Here are the best places to live in Texas
Check out the 10 most dangerous cities in Texas
Safest Cities In The US
See the best places to live in O'Brien