Originally Posted by NotSoGifted
Momtofour, College Board did a major overhaul on the AP Bio exam two years ago. That is why there are fewer 5s - they made the test harder (though my kid thought the MC was really easy, much easier than the old tests).

So the recent changes in score distributions are likely due to changes in the tests (and kids perhaps not being familiar with the new formats, as there aren't that many practice materials available).

Ah-ha, that makes sense! I was out of the HS loop for a good many years (8-year gap between 2nd and 3rd child) so with #3 just starting HS this year, I've been unaware of changes. Thanks for the update. Hope there will be practice materials if/when he takes it!