<p>Bus is 15 minutes to Harvard Square unless you take the 5PM bus on a Friday. Then you’re just stupid. Any other time it’s 15 minutes or less. 20 minutes to Porter Square by commuter rail. </p>
<p>The bus drops you off in a relatively inconvenient place in Boston (at least for where I want to go) so I always go to Harvard Square unless I want to go to the Boston Public Library.</p>
<p>All in all, it takes me MAX 45 minutes to get from Brandeis to the end of the green line in Jamaica Plain unless A) there’s a Red Sox game, B) it’s snowing, or C) public transportation ceases to exist.</p>
<p>Nobody takes the commuter rail unless you’re going to the airport (and even then, most people seem to take cabs or the airporter) so the bus is the generally most used way. There’s also an MBTA bus which stops right in front of campus, but I’ve never heard of anyone using it.</p>