I think you may be missing my point Edam
'I really don't see the problem with the exam board setting the Leonard poem (great poem, btw, never seen it before) while expecting students to use standard English.'
IMO Leonard's POV is that although we associate SE and RP with 'the trooth' there's no reason why you can't tell the 'trooth' in any other dialect eg Glaswegian. However, at the same time as getting students to study this poem, the exam board, AQA, as it happens, would severely penalise a student who wrote a piece of CREATIVE writing (or original writing as it's called now) in his or her own voice or an imagined voice with a dialect or using non SE of any kind. I think there's a fairly bitter irony here though I absolutely agree that there are some contexts where it would be entirely inappropriate to use dialect or non SE (in most of the exam paper, for example) and that AQA must test students' ability to use it.
'And aren't your students entitled to their views on which version of English they'd like newsreader to use?'
Again, I didn't express my point very well. My students are absolutely entitled to their POV on how newsreaders should speak, I just thought it was a real shame that they had missed the point of the poem (because they didn't understand that the poet was being ironic) and their instinctive response was that they didn't feel that TV should represent Britain as it is (where only 5% of English speakers use RP and most people have an accent and use dialect of some kind). In saying this they were saying that their accent and dialect was less valid than RP and SE and less trustworthy. How sad. We did have a really interesting discussion about it though and I got them to think about why it was OK for EastEnders and Corrie's characters to use dialect and accents (with no loss of clarity for those in other parts of the country) but not the news. TBH I think my students were trying to tell me what they though I wanted to hear. Either that or they really do need to be made to value their own voices more.
'It's just the idea that it's somehow patronising to teach children the rules that are generally accepted right now, really hacks me off.'
But who thinks this? No teacher I've ever met thinks this. And its OUR JOB to teach children 'the rules' as far as there are any. We HAVE TO follow the National Curriculum and we have to prepare them for SATS and GCSEs. And you're absolutely right that all students will need to be able to understand and write in SE on many many occasions in their adult lives. I really don't think any teacher, school, exam board would say anything other than this. It's probably one reason why most of us went into teaching!!
'I've been a child in a sink school and a reluctance to correct spelling didn't do anything to help any of those children pass exams or get decent jobs or a chance of a future.'
You might be surprised. Today, if a teacher didn't correct every spelling, this wouldn't be because he or she was saying, 'Don't worry love, you spell how you want to spell. It doesn't really matter'. Very far from it. If a teacher slapped red ink all over a student's work esp where the student had tried really hard then it would be completely counter-productive. The student would feel that her IDEAS were not being respected and feel like giving up. I certainly would. In fact, when trying to write in French at university level, I did give up the course for precisely this reason. Although I'd got an A at A Level, every bit of French writing I did at university came back covered in red and so I gave up. Of course students need to be taught to spell 'correctly' but a good teacher would pick out particular patterns of mistakes that an individual student or whole class was making and focus on these rather than randomly covering a piece of work in red ink. Also, the focus for a particular piece of work may be paragraphing or character or whatever in which you'd focus on how a student had used these rather than spelling.