<p>If you’re a transfer student, you need to be at Northwestern for a minimum of six quarters (two standard academic years), so you could theoretically be a junior. </p>
<p><a href=“Undergraduate Registration Requirement: Office of the Registrar - Northwestern University”>http://www.registrar.northwestern.edu/graduation/undergraduate-registration-requirement.html</a></p>
<p>NU is slightly stingy about using high school APs for credit though. Talk to someone at the registrar’s office to get a definite answer.</p>
<p>As for your chances, I really don’t know because I’m not an admissions councilor. However, I’d say give it a shot if paying the application fee isn’t too big of an issue.</p>