<p>I'm just curious because I just recently discovered this, what are some colleges that can cross-register with other schools?</p>
<p>I only know the following:</p>
<p>Bryn Mawr, Haverford, Swarthmore, and UPenn
Harvard, MIT, and Brown
Wellesley and Brown
BU, BC, Brandeis, and Tufts</p>