| Index | Blenheim | South Carolina | National |
| Average Test Scores | 14% | 47% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 932 | 79,221 |
| Total private schools | n/a | 369 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Blenheim | South Carolina | National |
| Completed 8th grade | 83.6% | 83.0% | 84.3% |
| Completed high school | 83.6% | 81.6% | 83.0% |
| Completed some college | 34.4% | 56.6% | 59.4% |
| Completed associate degree | 6.6% | 35.6% | 38.5% |
| Completed bachelors | 6.6% | 26.5% | 30.3% |
| Completed masters | 4.1% | 9.6% | 11.5% |
| Completed professional degree | 0.0% | 2.5% | 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 Blenheim. Using the proficiency score averages, the average test scores for Blenheim, SC schools is 14%. The average student to teacher ratio is n/a. In Blenheim, SC, an average of 83.6% of students have completed 8th grade and an average of 83.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Latta, SC | 1,627 | 50% | 3.1% |
| Darlington, SC | 6,000 | 47% | 2.3% |
| Clio, SC | 484 | 37% | 22.9% |
| Cheraw, SC | 5,596 | 36% | 25.0% |
| Bennettsville, SC | 7,905 | 36% | 25.5% |
| Blenheim, SC | 123 | 14% | 70.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Nicasio, CA | 123 | 60% | 25.0% |
| Capron, VA | 123 | 82% | 70.8% |
| Acme, WA | 123 | 51% | 6.3% |
| Lookeba, OK | 123 | 54% | 11.5% |
| Guys Mills, PA | 123 | 51% | 5.2% |
| Blenheim, SC | 123 | 14% | 70.8% |
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