Electives?

<p>So I was browsing the Carnegie Mellon website, looking at their requirements, and I see "6 electives".</p>

<p>This has me really worried. I don't know what counts, and if how many times.</p>

<p>I have taken band for 3 years now, does that count as 3 or 1?
And it was concert band for 3 quarters and marching for 1, are these separate electives?</p>

<p>I am really worried, because I have good scores and classes, but I don't have enough electives?</p>

<p>Do mandatory ones (i.e. Health and Physical Education) count?</p>

<p>Is this common at other schools (i.e. Ivies, top publics, etc)</p>

<p>Thanks</p>