| Index | Joanna | South Carolina | National |
| Average Test Scores | 35% | 47% | 48% |
| Student/Teacher ratio | 16:1 | 16:1 | 16:1 |
| Total public schools | 1 | 932 | 79,221 |
| Total private schools | n/a | 369 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Joanna | South Carolina | National |
| Completed 8th grade | 74.5% | 83.0% | 84.3% |
| Completed high school | 74.5% | 81.6% | 83.0% |
| Completed some college | 41.6% | 56.6% | 59.4% |
| Completed associate degree | 19.8% | 35.6% | 38.5% |
| Completed bachelors | 12.4% | 26.5% | 30.3% |
| Completed masters | 3.8% | 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 1 public schools, n/a private schools and n/a post-secondary schools in Joanna. Using the proficiency score averages, the average test scores for Joanna, SC schools is 35%. The average student to teacher ratio is 16:1. In Joanna, SC, an average of 74.5% of students have completed 8th grade and an average of 74.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Clinton, SC | 8,347 | 42% | 12.2% |
| Whitmire, SC | 1,641 | 41% | 15.1% |
| Waterloo, SC | 181 | 37% | 22.9% |
| Laurens, SC | 8,863 | 37% | 23.6% |
| Newberry, SC | 10,219 | 37% | 24.0% |
| Joanna, SC | 1,270 | 35% | 28.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Beaverton, MI | 1,270 | 33% | 30.7% |
| Renville, MN | 1,271 | 47% | 2.1% |
| Fayette, OH | 1,271 | 66% | 37.0% |
| Friars Point, MS | 1,269 | 22% | 54.2% |
| Inman, KS | 1,271 | 41% | 15.1% |
| Joanna, SC | 1,270 | 35% | 28.1% |
Here are the best places to live in South Carolina
Check out the 10 most dangerous cities in South Carolina
Check out the 10 safest cities in South Carolina
Most Dangerous Cities In The US