&gt;Actually, the chart shows a pretty damning story for selection bias: despite all the selectivity of schools, there&#x27;s no sign of improvement in returns for more selective engineering schools.<p>But since we&#x27;re talking about ROI and not salary, you very much want to get into the most expensive, most selective engineering schools.  If I invest money in bonds these days I&#x27;m going to get less than a 5% return - if I can get a 12% return I want to invest as much as I can borrow.