| Index | Clarendon | Pennsylvania | National |
| Average Test Scores | n/a | 55% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 2,563 | 79,221 |
| Total private schools | n/a | 1,626 | 24,874 |
| Total post-secondary schools | n/a | 406 | 7,963 |
| Index | Clarendon | Pennsylvania | National |
| Completed 8th grade | 81.2% | 86.9% | 84.3% |
| Completed high school | 76.3% | 85.6% | 83.0% |
| Completed some college | 29.6% | 53.6% | 59.4% |
| Completed associate degree | 14.5% | 37.4% | 38.5% |
| Completed bachelors | 10.9% | 29.3% | 30.3% |
| Completed masters | 4.6% | 11.5% | 11.5% |
| Completed professional degree | 0.7% | 3.3% | 3.3% |
| Completed doctorate | 0.0% | 1.4% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Clarendon. Using the proficiency score averages, the average test scores for Clarendon, PA schools is n/a. The average student to teacher ratio is n/a. In Clarendon, PA, an average of 81.2% of students have completed 8th grade and an average of 76.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Kane, PA | 3,479 | 58% | 19.8% |
| Warren, PA | 9,127 | 54% | 11.8% |
| Youngsville, PA | 1,711 | 51% | 6.8% |
| Russell, PA | 1,447 | 51% | 5.7% |
| Sheffield, PA | 961 | 46% | 4.7% |
| Clarendon, PA | 321 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Bynum, TX | 321 | 37% | 22.9% |
| Agra, OK | 321 | 24% | 50.0% |
| Creighton, MO | 321 | 45% | 7.3% |
| Niobrara, NE | 322 | 22% | 54.7% |
| Optima, OK | 322 | 25% | 47.9% |
| Clarendon, PA | 321 | n/a |
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