2011 Sample
285 schools
10,085 learners
Average age 16 years
Grade 9 tested
| Indicator | Mathematics | Science |
| Average achievement (standard error) | 351.9 (2.5) | 331.6 (3.7) |
| International benchmarks | ||
| % Learners below 400 | 75.5 | 74.8 |
| % Learners at or above 400 | 24.5 | 25.2 |
| % Learners at or above 475 | 8.5 | 11.0 |
| % Learners at or above 550 | 3.1 | 4.4 |
| % Learners at or above 625 | 0.6 | 1.2 |
| Average achievement by gender (standard error) | ||
| Boys (standard error) | 354 (3.0) | 335 (4.1) |
| Girls (standard error) | 350 (3.4) | 328 (4.5) |
| Average achievement by age in years (standard error) | ||
| 12-13 | 300 (19.8) | 251 (28.1) |
| 14-15 | 385 (3.2) | 377 (4.1) |
| 16-17 | 343 (2.6) | 320 (4.2) |
| 18-19 | 302 (3.0) | 264 (4.3) |
| 20-21 | 286 (12.4) | 242 (13.3) |
| Average achievement by poverty quintile (standard error) | ||
| Quintile 1 | 316 (5.7) | 279 (7.9) |
| Quintile 2 | 318 (3.59) | 285 (6.4) |
| Quintile 3 | 336 (3.96) | 314 (5.9) |
| Quintile 4 | 360 (5.62) | 348 (7.6) |
| Quintile 5 | 438 (9.69) | 445 (12.6) |
| Independent | 474 (17.08) | 479 (19.1) |
| Average achievement by test language (standard error) | ||
| Always/almost always spoken | 405 (4.5) | 412 (5.9) |
| Sometimes spoken | 337 (2.2) | 310 (3.4) |
| Never spoken | 312 (4.9) | 264 (6.1) |
| Average achievement by bullying at school (standard error) | ||
| Almost never bullied | 393 (3.9) | 392 (5.1) |
| Bullied about monthly | 362 (2.3) | 346 (3.4) |
| Bullied about weekly | 322 (3.0) | 287 (4.4) |