<p>Business casual.</p>
<p>I would personally wear brown dress shoes, tan dress socks that match my khaki dress pants, a brown belt, a colored button-down dress shirt with a low-key stripe pattern. You can add a decent looking watch. You can wear a tie if it seems to go with your pants and shirt, but don’t force it.</p>
<p>If your son doesn’t have business casual, err on the side of caution and dress up to a suit level.</p>
<p>I was suitemates with two of the senior interviewers last year and heard some insider tips on the admissions process:</p>
<p>If your son is an Eagle Scout or FIRST Robotics participant, definitely mention it but don’t spend 15 minutes talking about it. The admissions people are very familiar with both programs.</p>
<p>Try to stay cool and collected. Be excited about Mudd, math, etc, but don’t be overly excited or really nervous. Easier said than done for sure :)</p>
<p>And finally try to answer questions thoroughly without rambling. Nothing annoys interviewers more than having to pry information out of you or having to listen to stuff that is largely extraneous to the admissions process.</p>
<p>In other words, treat this pretty much the same way you’d attack a job interview. Good judgment is key.</p>