<p>You can double major between schools if you are in Pratt, but not in Trinity. For example, if you are in Pratt, you can double major in BME and Math if you wanted to, but if you are in Trinity, you can major in Math but not in BME. You can, however, double major within the same school.
You can transfer from one to the other, but I think you have to redo the entire application process again. Also, only about 5 students do that each year.</p>