1999 Sample
 194 schools
8 147 learners
Average age 15.5 years
Grade 8 tested

Indicator Mathematics Science
Average achievement (standard error) 275 (6.8) 243 (7.8)
International benchmarks 
% Learners below 400 86.3 85.9
% Learners at or above 400 13.7 14.1
% Learners at or above 475 5.4 6.8
% Learners at or above 550 1.2 2.0
% Learners at or above 625 0.2 0.5
Average achievement by gender (standard error)
Boys (standard error) 283 (7.3) 253 (7.7)
Girls (standard error) 267 (7.5) 234 (9.2)
Average achievement by age in years (standard error)
12-13 296 (21.4) 266 (28.1)
14-15 310 (8.6) 289 (10.4)
16-17 237 (5.6) 196 (4.2)
18-19 215 (7.9) 173 (9.3)
20-21 202 (10.6) 174 (15.8)
Average achievement by test language (standard error)
Always/almost always spoken 370 (11.7) 368 (14.9)
Sometimes spoken 259 (4.7) 222 (5.8)
Never spoken 224 (9.3) 177 (5.4)