I know anecdotes != data, but I and a bunch of my friends at our Ivy League university applied through the QuestBridge program[0] and for the most part, davmre's comment is completely on point.

I work more because I want to have more web dev on my resume before hitting the real world and also because I like being able to pay for some niceties that my mother wouldn't otherwise be able to afford, not because I need to to stay in school.

[0] http://questbridge.org/