| Index | Clark | 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 | Clark | Pennsylvania | National |
| Completed 8th grade | 90.8% | 86.9% | 84.3% |
| Completed high school | 89.7% | 85.6% | 83.0% |
| Completed some college | 43.2% | 53.6% | 59.4% |
| Completed associate degree | 29.0% | 37.4% | 38.5% |
| Completed bachelors | 16.3% | 29.3% | 30.3% |
| Completed masters | 4.4% | 11.5% | 11.5% |
| Completed professional degree | 0.9% | 3.3% | 3.3% |
| Completed doctorate | 0.9% | 1.4% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Clark. Using the proficiency score averages, the average test scores for Clark, PA schools is n/a. The average student to teacher ratio is n/a. In Clark, PA, an average of 90.8% of students have completed 8th grade and an average of 89.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Hubbard, OH | 7,466 | 71% | 48.6% |
| Sharpsville, PA | 4,125 | 69% | 44.4% |
| Hermitage, PA | 15,603 | 69% | 44.3% |
| Stoneboro, PA | 752 | 67% | 39.6% |
| Brookfield Center, OH | 1,375 | 61% | 26.0% |
| Clark, PA | 562 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Exeter, NE | 562 | 50% | 4.2% |
| Fisk, MO | 562 | 42% | 12.5% |
| Springfield, LA | 562 | 77% | 60.8% |
| Endeavor, WI | 562 | 60% | 25.0% |
| Noorvik, AK | 562 | 10% | 79.2% |
| Clark, PA | 562 | n/a |
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