In my experience ive never seen a teacher that would want to have any interaction with the student other than their job, and if anything teachers have had negative effects on the students, for example when they had parent/teacher night each teacher that had contact with you would talk to your parent, mine would come home and tell me that they said this about me, it was pretty much all common comments from each teacher, it was all nonsense, i queried other students what the teachers had said about them, i did this over the years, it wasnt till my final year that i found out from a teacher that had left the school that they had made up set generic answers since none of them really paid attention or knew who they were talking about.
So in this instance parents were getting a false impression from the teacher and i know my parent paid more attention to what they said than what i said was true, and the only impression that any teacher left on me was that they were lazy and overpaid, and even up till the last time when i was an advlt in the education system and a teacher as well, my impression didnt change, the only ones i met that were good were trainers that were temporarily contracted to do classes, because they worked harder and interacted better with the students because they wanted their contracts to be renewed.