Well I'm not sure she's being rude, she wants you to be staying beyond nursery which says to me that she must like you (or your child).
I kind of get the point, I think a lot of people like to send their children to a nursery attached to a school so their children will make friends with other children going to the same school. If most people just use the nursery and then move to another school, this benefit is lost.
It is a little odd where we live as there are no nursery schools attached to primary schools. We tend to have large day nurserys or nursery within Prep Schools.
I don't know if I will keep her at the Prep or attend the local Primary schools, both of which are really good.
To me though, I love the fact that they have super grounds and the little ones spend so much time in the woods etc. There are the free swimming lessons too. It just is a really nice start I think....even if it is for only 2 years.
Mixed feelings, tbh the fact that dds prep school nursery is so popular has probably kept the school running through difficult times. But i sort of see what she means in terms of keeping a group together, it's nice that kids come through from nursery together and sad when friends all leave, not the end of the world though so she probably was being a little rude.