Ah, OK. I misunderstood. I thought the HS offered only BC, not separate AB and BC courses.
If he wants to do DE for reasons other than admissions, fine, assuming it won’t impact his other activities including writing applications. If he (or you or the counselor), think that DE vs AB will be “better” for admissions, and will be the reason for acceptance vs rejected, it won’t.
CS info sessions are not meant to be blanket statements covering all 10000 people in the room. Here is the list of colleges that expect calc 2 in HS:
- There are none
Taking the highest level of math available is nuanced. If the HS offers mvc and you’re on track to take it as a senior because you took algebra 1 as a 6th grader, then you should take it. But if you go to a crappy school (and it’s only crappy by College Confidential standards) where your progression gets you “only” to AB, then take AB. Yes, there are acceleration options along the way, but they all come with downsides. And again, no college expects BC.