In my town, it's definitely very casual, borderline frumpy in some cases. For many people, it's all about comfort, so it's a North Face, a pair of jeans, and then either flip-flops, trainers, or Uggs. There are a lot of people who do "thrift store chic" and I don't mean in a good way, and then there are people who are the slaves to the trends but don't do them well. A lot of people have a pseudo skater/surfer/punk look, and the emo look really took hold when I was a high school senior. There are very few people who do a nice put-together look, and those who do get positive attention.