Posted on Quora 4/16/19
They have their reasons.
A few years ago Dartmouth did a study. They gave incoming students (who had taken AP psychology and got a 5 on the exam) a test to see how much they knew. At the same time they gave students who did not have AP psychology the same test. The students who had taken AP psychology and who had done quite well on the AP exam did no better on this assessment than the students who did not take AP Psychology.
They stopped accepting AP courses for college credit. Most elite universities are skeptical in this realm. They like to see their applicants have some AP course work because then they know that the student is prepared for college level work. But they prefer their students to take the basic courses at their college. Giving away Courses does them no favors and offers them no advantage. They do not need to negotiate this so usually they don’t.
Two of my own kids had taken AP micro and macro and did well on the exams. Their Ivy League college had no interest in awarding credit for this coursework, but, more importantly, according to my kids, that was a very good thing. Most of what they learned in these AP classes in high school was covered in the first six weeks of their college class. After that, the material was new. What they learned in the AP courses in high school was very inadequate when compared to what was covered in their actual college course for this subject.
Hope this helps –
Note added: This answer assumes the questioner wants to know why elite universities do not accept APs for credit, allowing the student to take fewer courses and pay less tuition. They don’t care very much about saving you money and they strongly prefer that you take the courses at their school. You might get to skip a class (without any tuition adjustment) and this may or may not be advisable.