[showerst]

Here's a site that calls 3+ passing - http://blog.prepscholar.com/average-ap-scores-for-every-ap-e...

Anecdotally when I took them 14 years ago 3+ was considered passing, and most mid-level schools took 3+ for credit except for things they specialized in, with higher tier schools requiring 4+ in more subjects.

The AP Board has a school lookup and the few schools I looked at (a mix of big state schools and more elite private universities) seemed to bear this pattern out.