<p>You can double (even triple or quadruple) major. You can also change majors post-admission. See:</p>
<p>[UW</a> Advising - Declaring a Major](<a href=“http://www.washington.edu/uaa/advising/majors/declare.php]UW”>http://www.washington.edu/uaa/advising/majors/declare.php)
[UW</a> Advising - Double Majors and Double Degrees](<a href=“http://www.washington.edu/uaa/advising/majors/double.php]UW”>http://www.washington.edu/uaa/advising/majors/double.php)</p>