Analysis of Problem Challenge Results since 2002
The table shows percentages at each year, scoring 15 to 25 questions correct.
| 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | |
| Year 6 | 3.5 | 2.8 | 2.1 | 1.5 | 1.1 | 0.8 | 0.6 | 0.4 | 0.2 | 0.1 | 0.1 |
| Year 7 | 3.9 | 3.3 | 2.7 | 2.1 | 1.6 | 1.2 | 0.9 | 0.6 | 0.4 | 0.2 | 0.1 |
| Year 8 | 5.2 | 4.7 | 4.1 | 3.6 | 3.0 | 2.6 | 2.0 | 1.5 | 1.0 | 0.6 | 0.3 |