I was at an info evening for my DD's school, and bumped into a woman I know. She was one of my first friends when I moved here but we've drifted since as we are very different (her: rich DH, huge house, me: poor but happy with simple life)... No animosity, just gradually reduced to friendly and slightly forced small talk.
I added to said small talk by saying how excited my DD is about starting in September, and she and the woman she was standing with burst out laughing and then went on about how their DCs had been excited and ready for school for soooo much longer - they were even competing with each other about it! It was quite bizarre and would've been really funny if they hadn't been so patronising and talked over me - it rankled a bit I must admit 
I am nervous... we are in a wealthy part of town, and the school is very much in demand as it has an excellent reputation. It was pure luck that we moved where we did (ie catchment) and found affordable rent. We are technically in poverty but are mostly happy as we are, simple pleasures and all that - no car, growing veg, no tv, wildlife mad, blah blah blah. But my goodness we really stuck out like a sore thumb at the school.
This doesn't really bother me for myself (or DH) - we've got lots of friends from other parts of town. I'm more worried it'll affect DD's social life there as all the alpha/yummy mummies know each other and are cliquey - it's certainly been the case at her preschool although as that was part time and informal, and her best friend was there it wasn't too much of an issue.
I have to get through 5 years at this school... Help!!! Please tell me some funny competitive mummy stories and cheer me up :)