I suspect this is one of those things that doesn't have an answer but anyway ...
At DD's school they have an extra teacher who covers PPA time and other teacher absences. DD regularly has this teacher for half or a full day every week and has done so since September.
Every time (it seems) DD has this teacher she comes home despondent. According to DD, the teacher confuses DD with 2 other girls in the class - she uses their names interchangeably and (which is the thing that DD is mostly upset about) she will promise DD she can do something (like give out the pencils i.e. v. important to Y1 children) and then later actually give the job to one of the other 2 girls. DD does also get jobs that the other 2 were promised so it's not all one way! Yesterday DD came home saying she should have got a sticker for X, but the teacher had given it to girl A instead.
Now, I realise the teacher is not deliberately trying to mix the girls up and is probably pretty frustrated by it as well as DD tells me that she, A and B are always telling the teacher she has got their names wrong - though not necessarily about mixing them up in other ways as it's not always practical/easy to do so. I'm not even worried about DD missing out on stickers etc - I tell her that adults make mistakes too, it's ok to point them out and that she should just be pleased with what she's done.
I am worried that she may be mixing the girls in terms of their abilities. Perhaps it's not a huge problem as she's not their main teacher - but she's likely to be teaching them again next year for the regular half day/day.
The girls' names are all very disimilar (she's not mixing Emma and Emily for example) and in the words of DD "I don't know why Mrs Z gets us mixed up because A has curly hair and B has glasses and I don't have curly hair or glasses, so we all look different!"
... But is there actually anything I can/should do?