From 2020 to 2025, pass rates (scores of 3 or higher) declined from 69.2% to 60%, while mean scores dropped from 3.28 to around 3.01, reflecting a gradual downward trend in overall performance.
The percentage of top scores (5s and 4s) steadily decreased over the years, with 5s falling from 24.2% in 2020 to 18% in 2025, and 4s from 19.3% to 18%.
Lower scores (1s and 2s) increased over time, with 1s rising from 8.8% in 2020 to 15% in 2025, and 2s reaching 25%, suggesting more students are struggling with the exam in recent years.