| Index | Winnsboro | South Carolina | National |
| Average Test Scores | 39% | 47% | 48% |
| Student/Teacher ratio | 15:1 | 16:1 | 16:1 |
| Total public schools | 7 | 932 | 79,221 |
| Total private schools | 3 | 369 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Winnsboro | South Carolina | National |
| Completed 8th grade | 78.5% | 83.0% | 84.3% |
| Completed high school | 76.8% | 81.6% | 83.0% |
| Completed some college | 45.5% | 56.6% | 59.4% |
| Completed associate degree | 23.0% | 35.6% | 38.5% |
| Completed bachelors | 18.6% | 26.5% | 30.3% |
| Completed masters | 9.1% | 9.6% | 11.5% |
| Completed professional degree | 5.8% | 2.5% | 3.3% |
| Completed doctorate | 2.7% | 1.1% | 1.3% |
There are a total of 7 public schools, 3 private schools and n/a post-secondary schools in Winnsboro. Using the proficiency score averages, the average test scores for Winnsboro, SC schools is 39%. The average student to teacher ratio is 15:1. In Winnsboro, SC, an average of 78.5% of students have completed 8th grade and an average of 76.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Chapin, SC | 1,698 | 71% | 47.5% |
| Blythewood, SC | 3,646 | 63% | 30.6% |
| Ridgeway, SC | 294 | 42% | 12.5% |
| Great Falls, SC | 1,806 | 32% | 33.9% |
| Winnsboro, SC | 3,208 | 39% | 18.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Jackson, MN | 3,208 | 53% | 10.9% |
| Pleasant Gap, PA | 3,208 | 67% | 39.6% |
| Welsh, LA | 3,209 | 75% | 55.7% |
| Hilliard, FL | 3,207 | 79% | 64.6% |
| Iowa, LA | 3,209 | 75% | 55.7% |
| Winnsboro, SC | 3,208 | 39% | 18.9% |
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