Trying to keep this vague in case this post ends up on the mumsnet facebook page.
We live in a deprived area. A couple of children will have whole class parties in reception, maybe 1 child in year 1. Rest (including us) do a small thing with family or 1 or 2 friends.
A family member lives somewhere a lot more affluent. Whole class parties are the norm right through primary and most children will have one every year.
I am quite happy we aren't the only ones at my dc school who don't have whole class parties every year and that I don't have to attend 90 children's birthday parties a year. But another family member thinks it's because they think I don't make an effort with socialising with other parents. Goodness knows why they think that, or if they think whole class parties are happening without inviting my dc.
I just think that parents who don't have much money don't do whole class parties because they are really expensive.