Why do we associate attending an Ivy League institution as a 17 / 18 year old for an undergraduate education as some sort of metric for success?
I mean, I'm not going to be naive and insist that the worthwhile life doesn't look at results and instead only looks at the journey, but to consider one's parenting model as "working" at age 17 because one's child is going to Ivy league is hilariously short-sighted (unless you're planning for your child to die a lot sooner than most people).
My TL;DR point is follows:
17 years is too short to draw any conclusions on how successful a person's life is so the jury should still be out on Tiger Mothering.