PastSellByDate I really don't want to convey that I have a 'hard cheese' attitude towards the children. I usually work in Reception and provide LH scissors, but a lot of the LH children don't choose to use them and the RH ones will do if they're the only ones left. All manage quite successfully.
One year 4 LH child queried why I did my ticks backwards and I explained to him. He had a go and his face lit up and he said "That's so easy!" Ticks are designed to me a quick mark making, and doing them backwards makes that easier for LH children. So clearly some things can be more difficult.
I usually enable LH children to sit on the end of the desk with their elbows free but I think most teachers would do this nowadays, even if it was a reactive decision "oh Thomas and James, why don't you swap places and then you won't keep bumping each other" and the SENCO would certainly have something to say if children were being discriminated against.
I just feel very strongly about giving some children and their parents a 'card' to wave. Not all families will wave them, but some definitely do. I support all children to overcome whatever their idiosyncracies. In the case of SN, I do it with the support of external agencies, the SENCO and more experienced teachers. In the case of little things like 'handedness' these are addressed in the course of the lesson, the way I organise the class. The KS1 children don't even realise.
What I object to is the fait accompli that:
All LH form letters different - we DO form our letters completely differently from a right hander. False.
All LH-ers find writing difficult - its why cursive is tricky for a leftie. False.
(don't mean to pick on UnexpectedOrange - just that the comments were succinct
)
All LH-ers have untidy writing. There are plenty on here who don't, and plenty of RH who do.
Surely, teaching LH a whole different way of writing which does not support cursive script is disadvantaging them. Not just not making a big deal of it. Lots of children find writing/letter formation difficult. It just isn't always easy to give a reason (excuse?) for it.
My DS is right handed and writes with his right hand but he hold his pen in that odd above the text hook that some LH-ers use. No one has ever tried to correct it!
Seriously Favorolles I would actually really like to see a LH letter formation chart if only to see if I would find any of the letters easier. I just can't imagine how I would form them differently. I was being a bit cheeky, but I really am curious now! 
Like I said, not all dc are the same, it's a mistake to treat them all as easily adapting, as clearly not all are. Agree. But there are a lot of sweeping generalisations being made on here about what all LH-ers are/can or can't do/think/whatever and there are LH-ers commenting on saying that it doesn't apply to them.
I've never met anyone who didn't reach their full potential because, and only because they were left handed.
Just as there are some parents who will not accept that their children have additional needs of any description there are also those who seem to want their children to (speaking from experience, not comments on here).
I would also like to make it clear that I am only talking about handedness here. Actual SEN are different.