Founders: would you hire a telecommuting, part-time (but talented) college student? 19 years ago
Bottom-line, you need experience. I'm young, 22, but got my job as lead developer when I was 20 and in college because no one could argue with my experience. I don't mean you need to go and work for a dozen companies before you can get a job where the founders trust you. Do what I did, manufacture experience. I've written around 10 medium-large scale projects by myself, one being a social network that wowed the founder of my current company.
One thing I know for sure, school means almost nothing. It helps a lot but only when you spend the time learning as much as possible about web technologies. As well as developing and refining your skills as a web developer.