I am not saying in every school and of course I am not saying every teacher. But I do think it's wrong for teachers to make a mental note that a child is low ability at such a young age. I have seen it happen in a school I worked in when I was helping children with their reading. A teacher whispered to me 'oh dear, you've got the thick table'. I think it is awful that children are written off so young and also that they are given the message that your self worth boils down entirely to how academically bright you are.
I can understand that in schools where there are classes of 30 the teacher may need to stream them to remind them of where the children are at but this tends to lead to a fixed idea imo. My friend has been told her dd is low ability and she's only in year 2. The reason was that she is on a lower ORT level than the other kids, apparently.
My dd, when in reception could not read ORT and was the last in her class to learn to read but she was not labelled in such a way and now in year 4 is working at NC level 4 so she's doing fine now.
Labelling negatively is surely a self-fulfilling prophecy isn't it?