Do the curves for AP exams change drastically every year? For example, the AP bio curve was ridiculous last year: a 78/99 was needed for a 5. The percentage of people getting 5s on world was also abnormally low.
For exams like physics that don't change much yearly, would the curve remain at around 65%?
What are your predictions for the curve to get a 5 for exams this year?