There are many ways to look at this. One way is that whether this is about equal opportunity or equal outcome. If we strive for equal outcome (which I think will be very bad for the society), it will be a different story. But if we believe in equal opportunities, then every kid needs to be challenged to fully develop their potentials. In this sense you are not asking for the moon for your DD, you are asking for academic challenge, which many kids do get in our public school system. It doesn't mean that your DD is the only one you care, but you are likely to be the one who she can rely on the most.
