<p>The best way to know is to check out the requirements themselves.</p>
<p>For 6-3: [MIT</a> Course Catalogue: Course 6-1, 6-2, 6-3](<a href=“http://web.mit.edu/catalogue/degre.engin.ch6.shtml]MIT”>http://web.mit.edu/catalogue/degre.engin.ch6.shtml)</p>
<p>For 15: [MIT</a> Course Catalogue: MIT Sloan School of Management](<a href=“http://web.mit.edu/catalogue/degre.manag.ch15.shtml]MIT”>http://web.mit.edu/catalogue/degre.manag.ch15.shtml)</p>
<p>There is an obvious lack of significant overlap between the two Courses. To me, it sounds as if completing all requirements with only 4 classes per semester would be difficult unless you were to come in on advanced standing or something.</p>