dude, my school's full of posh twits, but i'm there on two scholarships and a bursary, sure there's a divide between the aloof ones who can get around on money but there's also people like me who have been given a place on merit and failing financial standards.
You won't be judged as such, but if you are just be like...
at my school my friend was on a 50% bursary / enhanced scholarship and we just thought 'good for him' - I'm still impressed by it, as he got it through high marks in his entrance exam coupled with financial need.
My cousin has got a lot more money than me and she goes to an even posher school. She insinuated that they discriminated against scholarship people... so presumably bursary too. I found that pretty appalling. So I wouldn't tell people if you're self conscious - if it was me on the other hand I'd just say **** anyone that saw it as a bad thing!