| Index | New Castle | Pennsylvania | National |
| Average Test Scores | 57% | 55% | 48% |
| Student/Teacher ratio | 16:1 | 16:1 | 16:1 |
| Total public schools | 19 | 2,563 | 79,221 |
| Total private schools | 3 | 1,626 | 24,874 |
| Total post-secondary schools | 4 | 406 | 7,963 |
| Index | New Castle | Pennsylvania | National |
| Completed 8th grade | 80.3% | 86.9% | 84.3% |
| Completed high school | 78.5% | 85.6% | 83.0% |
| Completed some college | 40.4% | 53.6% | 59.4% |
| Completed associate degree | 23.2% | 37.4% | 38.5% |
| Completed bachelors | 15.2% | 29.3% | 30.3% |
| Completed masters | 4.6% | 11.5% | 11.5% |
| Completed professional degree | 1.2% | 3.3% | 3.3% |
| Completed doctorate | 0.4% | 1.4% | 1.3% |
There are a total of 19 public schools, 3 private schools and 4 post-secondary schools in New Castle. Using the proficiency score averages, the average test scores for New Castle, PA schools is 57%. The average student to teacher ratio is 16:1. In New Castle, PA, an average of 80.3% of students have completed 8th grade and an average of 78.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| New Middletown, OH | 1,389 | 84% | 74.3% |
| Poland, OH | 2,425 | 83% | 72.6% |
| Zelienople, PA | 3,694 | 80% | 65.6% |
| Lowellville, OH | 1,113 | 72% | 50.0% |
| Harmony, PA | 1,104 | 72% | 49.5% |
| New Castle, PA | 21,805 | 57% | 18.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Clarksville, IN | 21,825 | 42% | 13.0% |
| Elkridge, MD | 21,778 | 45% | 6.5% |
| Shelbyville, TN | 21,841 | 25% | 47.8% |
| Geneva, IL | 21,843 | 49% | 1.6% |
| Darien, IL | 21,843 | 48% | 0.2% |
| New Castle, PA | 21,805 | 57% | 18.5% |
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