| Rank* | County | Percent of 3rd Graders Below Basic on 2007 PACT (Math) | Rank* | County | Percent of 5th Graders Below Basic on 2007 PACT (Math) | Rank* | County | Percent of 8th Graders Below Basic on 2007 PACT (Math) |
|---|---|---|---|---|---|---|---|---|
| 1 | Calhoun | 10.3 | 1 | Horry | 12.9 | 1 | Anderson | 18.8 |
| 2 | Horry | 13.1 | 2 | Oconee | 13.4 | 2 | Oconee | 21.0 |
| 3 | Edgefield | 14.9 | 3 | Abbeville | 13.8 | 3 | Horry | 22.1 |
| 4 | York | 15.0 | 4 | York | 15.7 | 4 | Lexington | 22.6 |
| 5 | Pickens | 15.3 | 5 | Anderson | 16.2 | 5 | York | 22.6 |
| 6 | Oconee | 16.0 | 6 | Calhoun | 16.9 | 6 | Greenwood | 23.2 |
| 7 | Anderson | 16.6 | 7 | Lexington | 17.1 | 7 | Pickens | 23.8 |
| 8 | Lexington | 16.7 | 8 | Dorchester | 17.6 | 8 | Lancaster | 24.6 |
| 9 | Georgetown | 17.3 | 9 | Georgetown | 18.4 | 9 | Aiken | 25.1 |
| 10 | Abbeville | 17.5 | 10 | Berkeley | 18.7 | 10 | Edgefield | 25.5 |
| 11 | Aiken | 18.1 | 11 | Pickens | 19.0 | 11 | Kershaw | 27.0 |
| 12 | Greenville | 18.2 | 12 | Saluda | 19.5 | 12 | Chesterfield | 27.9 |
| 13 | Dorchester | 18.3 | 13 | Spartanburg | 19.7 | 13 | Saluda | 28.0 |
| 14 | Kershaw | 18.5 | 14 | Charleston | 20.4 | 14 | Spartanburg | 28.2 |
| 15 | Charleston | 20.8 | 15 | Greenville | 20.5 | 15 | Abbeville | 28.6 |
| 16 | Union | 20.8 | 16 | Aiken | 20.9 | 16 | Berkeley | 31.8 |
| 17 | Dillon | 21.2 | 17 | Laurens | 20.9 | 17 | Greenville | 32.0 |
| 18 | Berkeley | 21.3 | 18 | Lancaster | 22.7 | 18 | Newberry | 32.1 |
| 19 | Spartanburg | 21.3 | 19 | Beaufort | 23.6 | 19 | Laurens | 32.2 |
| 20 | Sumter | 23.3 | 20 | Florence | 23.8 | 20 | Union | 32.3 |
| 21 | Williamsburg | 23.4 | 21 | Sumter | 23.9 | 21 | Dorchester | 32.7 |
| 22 | Lancaster | 23.8 | 22 | Kershaw | 24.1 | 22 | Cherokee | 34.9 |
| 23 | Chesterfield | 23.9 | 23 | Edgefield | 24.5 | 23 | Charleston | 35.2 |
| 24 | Laurens | 23.9 | 24 | Newberry | 26.3 | 24 | Georgetown | 36.2 |
| 25 | Darlington | 24.6 | 25 | Chesterfield | 27.0 | 25 | Dillon | 37.2 |
| 26 | Greenwood | 24.7 | 26 | Darlington | 27.0 | 26 | Florence | 37.7 |
| 27 | Clarendon | 25.1 | 27 | Greenwood | 27.1 | 27 | Richland | 38.8 |
| 28 | Beaufort | 26.4 | 28 | Richland | 27.8 | 28 | Clarendon | 38.9 |
| 29 | Florence | 26.8 | 29 | Cherokee | 28.0 | 29 | Beaufort | 39.9 |
| 30 | Newberry | 27.4 | 30 | Williamsburg | 31.1 | 30 | Darlington | 40.5 |
| 31 | Cherokee | 28.8 | 31 | Hampton | 31.3 | 31 | Sumter | 42.8 |
| 32 | Saluda | 29.1 | 32 | Union | 33.1 | 32 | Chester | 43.7 |
| 33 | Orangeburg | 30.1 | 33 | Orangeburg | 34.5 | 33 | Calhoun | 43.9 |
| 34 | Richland | 30.2 | 34 | Bamberg | 35.7 | 34 | Marlboro | 44.1 |
| 35 | Fairfield | 30.8 | 35 | Chester | 36.7 | 35 | Hampton | 45.2 |
| 36 | Marlboro | 32.6 | 36 | Dillon | 37.3 | 36 | Williamsburg | 47.2 |
| 37 | Chester | 34.5 | 37 | Colleton | 37.6 | 37 | Colleton | 47.9 |
| 38 | Barnwell | 37.3 | 38 | Marion | 38.0 | 38 | McCormick | 48.5 |
| 39 | Lee | 38.5 | 39 | McCormick | 39.4 | 39 | Orangeburg | 49.0 |
| 40 | Colleton | 39.4 | 40 | Barnwell | 40.8 | 40 | Marion | 50.3 |
| 41 | Hampton | 40.5 | 41 | Allendale | 41.7 | 41 | Barnwell | 51.4 |
| 42 | McCormick | 41.0 | 42 | Clarendon | 44.9 | 42 | Bamberg | 55.1 |
| 43 | Bamberg | 43.4 | 43 | Fairfield | 45.9 | 43 | Allendale | 55.4 |
| 44 | Allendale | 46.7 | 44 | Marlboro | 49.1 | 44 | Lee | 56.0 |
| 45 | Marion | 47.7 | 45 | Jasper | 58.2 | 45 | Fairfield | 57.0 |
| 46 | Jasper | 48.6 | 46 | Lee | 69.7 | 46 | Jasper | 65.4 |
| South Carolina | 21.8 | South Carolina | 22.4 | South Carolina | 32.0 |
* 1 is best, 46 is worst.
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