<p>So you really aren't asking about what the university prestige's effect is, but rather what the major effect is. A harder major and a harder school will give you a boost, but only if your numbers already put you in range of the school you are applying at. The only time they help from what I have seen is when it comes down to two applicants with similar numbers. In that case, the 3.8 Physics major from MIT will probably get picked over the 3.8 philosophy major from Podunk University. But if they did not already have similar numbers, the Podunk U philosophy major would have the edge.</p>