I've been following along and in just horrified for you and your son. The first thought I had about why she's being such a stickler about this for no good reason is maybe she's struggling to maintain control in general of the classroom. Then she gets hyper focused on obedience etc etc. Some teachers do really spend way more energy on compliance than learning, sadly. I really hope your talks are going to make her grow a bit. And maybe it is all about record keeping. Sometimes teachers get so overwhelmed they really do expect everyone to just go along and conform to make things "run smoothly"... But this is ridiculous.