After being scolded (but also praised) for creating and distributing a game for TI-84 calculators to multiple math classes of Valley High School, I was offered a part time job at Webspec Design. Webspec is a dev firm that does client work in Urbandale, Iowa.
Although I really had no idea how to make a website, I was willing to learn along the way. I worked on several client projects throughout high school and helped out with miscellaneous internal dev work. It was my first job and my first real foray into development.