I remember this happening when I was at school. there would be a list on the board with the names of children when they were disruptive like a 'naughty list'. I thought this had finished years ago. I'm looking at potential primary schools for DS and one of the schools I had thought otherwise looked good use this as a first defence sanction. They don't call it a naughty list, it's called something like 'name on the mountain' where I presume there's some kind of mountain on the wall where they add children's names as they might disrupt the class.
I'm sure I remember in my teacher training that this had been got rid of as the children with their names on there could be doing it for attention and would like the attention of having their name on the wall, even if it was for something negative they have done. I've never seen it done myself my any colleagues. Is this a red flag or am I overthinking?