I actually think this is a really interesting question!
I always assumed that all spellings would be corrected, but not every incorrect spelling would need to be written out by the pupil. I also assumed that this would only be the case for English, with other subjects focussing on more specific subject-related learning.
I do struggle a bit with the idea of just ignoring incorrect spellings in an English lesson, partly because of the message it gives off. I’ve heard more than one pupil say that it doesn’t matter as their teacher doesn’t care. I think good spelling and grammar matters, and it will help our children enormously if they can become as proficient as possible. I think that emphasising the importance of SPAG isn’t a bad thing, but that would mean highlighting all mistakes.
However, I don’t think the child copying out the correct spelling is a useful tactic, especially not when there are multiple corrections.
Both my DC are autistic and my DS wouldn’t write words that he wasn’t absolutely sure of because he was so scared of making a mistake. So I completely understand why having a page full of corrections could be counterproductive for some children but I’m not sure that ignoring incorrect spellings is helpful either?
I don’t really know the answer. Correcting spellings without further comment in one colour pen, and leaving feedback on the actual work in another colour? So no comment on the spellings but praise for the work eg “great use of adjectives Johnny”.
Ideally, teachers would be able to create personalised spelling lists weekly, based on the English work completed. However with a class of 30 and an enormous admin burden, that’s not really feasible.
I discovered that the easiest way to learn vocabulary and spelling was from repeated exposure and simple reading. Eventually it just sticks when you see it time and time again. Correcting spellings exposes the child to the right way to spell the word, but maybe there could be less emphasis on it being wrong? Maybe just a correction without comment, and then focus on the actual content? I don’t know though really, would be interested in other ideas.