In message , Richard J.
writes

The problem is that students in any subject other than English are not
penalised for poor language skills, so they never have an incentive to
improve those skills.

At A level, marks are allocated for SPG (Spelling, Punctuation and
Grammar) in all papers involving prose answers, whatever the subject.
This has been the case for many years. I don't think the problem is lack
of incentive so much as lack of ability.

I don't know what universities do these days, since it is some years
since I last taught at that level.
--
Paul Terry