I run periodic professional development sessions here in New York with my partner in crime JonAlf Dyrland-Weaver. I call them PD for "APCS-A, similar or beyond" and they're designed to fill a professional development gap. We try to run them once a month but it's a little less frequent than that. The NYCDOE has taken on the monster task of CS for all and since they're trying to get to everyone they have to run a bazillion sessions but all at an introductory level.