<p>It depends on the university you want to attend and their application system there. Sadly, I don't know anything about the spanish one but if you are competitive student in the US you most likely will be abroad as well. Most US university's have study abroad experiences.</p>
<p>I'd imagine that depends quite a bit on the University you're applying to. Getting into Oxford is going to be much harder than getting into The University of Guelph...As for Spain, I don't know too much about schools over there.</p>