Khakis with the school logo, solid color dress shirt, belt, blazer (red = upperclassmen, blue for under), tie (any sane style accepted), and dress shoes, but the ones you buy there are surprisingly comfortable. The rules itself are lax, but when something doesn't follow (or someone hasn't tucked his shirt in), they are strictly enforced. Alternatively, we can wear grey trousers and polos (when seasonally applicable).

As far as individuality goes, I'm the only person who wears purple socks, and everyone else doesn't care about how they look (I go for the comic relief). It's a small school, so everyone knows everyone else.