I agree that they will notice on their own; all my other scores are 5’s and one 4 in AP World (9 exams).
Not sure how not elaborating would help me in this case. The students weren’t even notified of the opportunity: the College Board sent an email directly to coordinators and made it optional for schools to participate. I only found out through a neighboring school offering the opportunity, and I contacted them as well. They said I would not be allowed to sit the retake there as I did not attend.