Yes, I saw how sec 1 students from independent primary schools look down on and bullied their classmates from neighborhood primary schools (even if the former had worse psle scores than the latter) that's why I vowed to myself never to send my children to a branded primary school. In JC, if a girl wasn't pretty or really smart, she could rely on her rich background to fit in. I remember how schoolmates fawned over how one of them had a house with 8 bathrooms, so they all went there to shower, except the girls who were not invited by this rich girl. I saw how a poor classmate was unable to afford expensive JC tuition because she lived in a rental flat and her mum was a single mum earning freelance pay, where more privileged kids (myself included) could catch up on 2 years worth of JC syllabus in a few months via tuition that could cost $50-75 an hour even in a group setting. She studied hard and then went to take a diploma in a skill valued in healthcare sector. But that being said, there are also instances people from different income background had great friendships and belonging, just that the poor probably had to prove more why others wanted to hang out with them. I apologize if my reply is offensive to some, this is just what I observed.