| Index | Newcastle | Texas | National |
| Average Test Scores | 52% | 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 | Newcastle | Texas | National |
| Completed 8th grade | 74.0% | 79.3% | 84.3% |
| Completed high school | 69.8% | 77.8% | 83.0% |
| Completed some college | 36.2% | 57.3% | 59.4% |
| Completed associate degree | 12.3% | 34.9% | 38.5% |
| Completed bachelors | 9.0% | 28.1% | 30.3% |
| Completed masters | 1.2% | 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 Newcastle. Using the proficiency score averages, the average test scores for Newcastle, TX schools is 52%. The average student to teacher ratio is n/a. In Newcastle, TX, an average of 74.0% of students have completed 8th grade and an average of 69.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Olney, TX | 3,098 | 64% | 33.7% |
| Graham, TX | 8,618 | 46% | 4.2% |
| Newcastle, TX | 577 | 52% | 8.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Austinburg, OH | 577 | 85% | 76.0% |
| Ochelata, OK | 577 | 22% | 54.2% |
| Echo, OR | 577 | 60% | 24.0% |
| Fort Jones, CA | 578 | 50% | 3.1% |
| Jamesville, NC | 578 | 50% | 3.6% |
| Newcastle, TX | 577 | 52% | 8.3% |
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