<p>-Although colleges do not require it and do not have the major, would it be ok to send supplementary material, in my case, a dance dvd, to a place like Notre Dame, just to express my extracurricular promise to continue dance at ND?</p>
<p>I think it depends how important your particular ec is. Since you're planning to pursue dance in college, then it can only help. However, read the information posted on the college sites carefully, because some colleges, like Yale, explicitly note that they do not accept DVDs or videos.</p>