Thank you for all your advice and thoughts. Just to answer a few questions:
DD would be leaving at 11, not 13.
We wouldn't be preparing for CE, all the independent secondary schools round here start at 11.
No, it's not for exam results that we're paying, hence why I'm so nervous. I suppose we are spending thousands on the 'luxury of extras' and no, I'm not talking about the manicured lawns - they're actually not that impressive!
It feels alien as DH and I were state educated and we expected dd to be, but she now isn't going to be. It wasn't part of any 'plan' to privately educate our children, we just felt so flat after looking at the primary in the village. It was either sit for her some of the assessments at some of the local preps or move house so we'd be in catchment for another primary, which I didn't have the inclination to do.
This is a really special school and I'm not prepared to pay for prep, just because it's a private school ifkwim? There were preps we looked round that I, quite frankly, thought were a complete waste of money. Dd's school is everything and more for a number of reasons - too many to describe, but the teaching, the way they teach, the extras, class sizes, etc.
Leavers' destinations - yes, I asked for them all going back 5 years from every school we looked at. I would say the majority at dd's school go onto independent secondary, around 20% grammars.
I would love to be (who wouldn't?) in the position where she sat all the entrance exams for the grammars, passed them and then we could decide what would be the better option - private secondary or grammar. I know at one of the preps one of the heads openly said that a percentage of their students don't get into the grammars and it's easier to 'get them in' to the private secondary schools as he can call the school and speak direct to the head about said student. I was pleased to hear that as it showed the 'purity' of the grammar school selection process.
I suppose I'm asking is the prep school too much of a luxury as she may end up at a grammar school, rather than private secondary? Then I suppose you could start a whole thread about which is better: grammar or private secondary, as reading that comment back infers I think the grammar is inferior, which isn't actually true at all.
A part of me thinks though, the house can wait and we should just live for the moment and give them amazing experiences and opportunities in their early years which will hopefully stand them in great stead for the future. OK, it's not as extreme as this, but I would hate to live in a beautiful house, but have my girls go to a uninspiring primary where they weren't flourishing and not particularly happy.