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 | 2.7 | 2.1 | 1.6 | 1.1 | 0.9 | 0.5 | 0.3 | 0.2 | 0.1 | 0.1 |
| Year 7 | 4.2 | 3.5 | 2.9 | 2.3 | 1.7 | 1.3 | 0.9 | 0.7 | 0.4 | 0.2 | 0.1 |
| Year 8 | 5.4 | 4.9 | 4.5 | 3.9 | 3.3 | 2.9 | 2.3 | 1.7 | 1.2 | 0.8 | 0.3 |