That's how the school district I grew up in ended up with a large population of high expectation Chinese parents. Parents with young kids move there because the

That's how the school district I grew up in ended up with a large population of high expectation Chinese parents. Parents with young kids move there because they hear that some Chinese students from that school district got accepted to Ivy League schools. The children of these high expectation parents inevitably also disproportionately get accepted into top tier universities, which further perpetuates the cycle.