I looked over the schools I applied to (over a decade ago) and it seems like the Ivies have gotten a little pickier about giving credit for AP exams.
I just spot checked some of the brand-name non-Ivy schools that my friends attended and all but one offer actual college credit for AP exams: Stanford, Northwestern (varies by college; I only checked one), Carnegie Mellon, Georgetown, Johns Hopkins, and NYU all give college credit for AP exams. Boston College only offers advanced placement.
I just spot checked some of the brand-name non-Ivy schools that my friends attended and all but one offer actual college credit for AP exams: Stanford, Northwestern (varies by college; I only checked one), Carnegie Mellon, Georgetown, Johns Hopkins, and NYU all give college credit for AP exams. Boston College only offers advanced placement.