@TryHardForLife , by “Does anyone know how to write a polite admission rejection letter to your interviewers?” Do you mean a letter notifying they will not be attending the school in question?
If you think the AO did an exceptional job, write the AD.
If they were professional but not engaging, an email letting them know as early as possible that you are greatly appreciative of their effort and attention but chose another school, that helps them focus on the kids that are undecided.
They all understand attractive applicants are going to be accepted to multiple schools, and can only attend one.
@KC2022 I highly encourage your child read “The Gatekeepers” about a year in the life of Admissions Officers and applicants at Wesleyan. My son’s school required it for a college skills class, and it really helped him understand what AO’s are looking for and how to present himself. The process is FAR more arbitrary than kids tend to believe.
It reminds me of a friend who is a fisherman. He came home with what appeared to be to his wife a minimal catch: and was unhappy. His wife responded, “Well, did you expect to catch ALL the fish?”