Your own link shows that 5 of the top 10 mid-career median salary schools are Ivy League schools. Only Brown (more arts-focused), Columbia (no clue why this isn't there), and Cornell (only Ivy with public ties, and the largest Ivy) aren't included.

From the parent:

> Because, by all accounts, it is one of the most reliable indicators that the child is going to be successful.

Clearly, it isn't. If it were, the only schools there would be Ivies. They are not.