You need to review the financial aid webpage for what they want, when, and how they want it sent. Every college has their own requirements.
Here is the link. Be sure to read the footnotes, too:
http://www.bc.edu/offices/stserv/financial/finaid/undergrad/applying_for_aid/prospective.html
They do want the returns mailed to:
http://www.bc.edu/offices/stserv/financial/finaid/undergrad/about_us/contact_us.html