Okay, so without getting into this too much, just think about it from the admissions perspective. Unweighted GPA is the most important thing. Weighted GPA (rigor) matters, but only in relation to what your school offers, not what is out there. It’s why an intelligent kid actually has a much better chance of going ivy if they’re at a terrible school and a valedictorian than at an extremely competitive school and barely make it into the top 10%. The only exception to this is very well known prep schools, like Andover or Phillips Exeter. As someone who came from a USNews T10 high school, but not a historic prep school, this really hurt me and I ended up having to transfer to get into an ivy.
Also, know that the 3.75 UW posted above is grossly inflated by athletes, legacies, and URMs. If you’re none of the above, expect the UW GPA cutoff to be around 3.9, with 3.95+ for HYPCS. As an Indian student I felt like the expectation for my GPA was slightly higher than this, because affirmative action “groups” kids by race so my GPA competition was other Asian kids. Not sure if this applies to you though.
Certain ivies put more emphasis on the “numbers” (ex. Penn, Dartmouth) and others on extracurriculars and essays (ex. Columbia, Brown). But at the end of the day, these are negligible if your GPA isn’t competitive.
Finally, don’t worry about it too much. From a cursory glance at your other posts it seems that you’re a parent and I know it can be stressful. I also had a “tiger mom”. But I also get the sense from your posts that you’re forcing your interests on your kid a little (finding ways to convince them to choose Cornell and small schools in the middle of nowhere). I know it can be tough, and I’m sure you want what’s best for your chid, but this is really something that needs to be their decision. I had the same relationship with my own mother. The hardest thing she ever did was let me make my own college decision, but it was also the best. I would have been miserable at the schools she wanted me to go to (comprable rank, but she thought she knew what was a better fit for me than I did.)
Hope this helps!