Over the years, I have gotten several phone calls / emails from schools on the OOB wait list. On other occasions, I have not heard from schools where given the wait list number my child had, and the number of school slots, I've been very surprised. I've concluded the wait lists are not always followed, and when I really would like my child to attend a particular school, I call every 3 to 4 weeks.
School staff have always been responsive and polite during those calls, including Lafayatte for an upper grade OOB.