Wow, someone from my school already posted on policy. Girls are allowed a watch, bracelet, necklace (with gold medallion or cross, apparently, but no-one's ever been pulled up for that) and one set of earrings. Sleeper's can't be any bigger than 1.5cm in diameter, but seniors basically get away with more, as long as they're not that big.
With the girl's uniform, the skirt's alright, and so is the weird senior tie that matches it, and it goes well with our white blouses. The blouses are an absolute tent, so everyone looks about 2 sizes bigger when wearing one, unless you look like a stick. The matching 'dress' ankle socks aren't bad, but would be much better suited to the sports uniform, which are too hot in summer. The senior cardigans are the biggest joke. Sixty dollars for something that isn't too warm, scratchy, and doesn't cover most of the chest. Principal replies "But it looks good" to complaints that they're not warm enough.
We only have to wear blazers if we're representing our school, and the guys don't have to wear their ties unless they want to or representing.
The guys' uniform is pretty good. Grey shorts or long pants, white shirt, grey (usually knee-high) socks.
Overall, when I used to go to Catholic Schools State Debating Competitions, we'd always have one of the better uniforms, so that's a good thing.