<p>No, you don’t, although I usually wore a jacket and tie. Most men will wear ties, a number will wear jackets, a few will wear full suits and a few will wear nice shirts but no ties. That was how it was in my house, at least.</p>
<p>Oh, also, if you plan to play in one of the music groups you’ll get a LOT of use out of a decent used or not-too-expensive tux. (And even if you’re not musical, if you go to ASCIT Formal more than once you’ll likely save money over renting.)</p>