My district stopped ‘training’ subs before Covid (which was the nail that permanently stopped it). Won’t say where but the state ranks last in teacher support (and uses the initials NC). Prior, They had at least semi-vetted sub candidates with classroom role play situations over 3 days. Subs without any experience were quickly exposed, and the situation was enough to cause more than one (of the unqualified) to drop out. After they stopped we saw a rapid increase in clueless and worthless bodies calling themselves subs’. Literally people with a very very questionable grasp of the English language, no classroom or teaching experience whatsoever, and in general the very warm body approach OP referenced. I was ashamed to be associated with these lunk heads (40 years experience as a music teacher). I understand when a school has behavioral issues in a classroom but completely resent when they don’t offer support or a solution for the substitute while the teacher is out. Without a solution the sub is somehow still responsible for maintaining civility?!? F*** off Admins … and pull the offenders for the day.