While we do make money through referrals, our ability to place someone at a company we work with is not something we consider while doing admissions. (This may be hard to believe, but trust me.) We have a significant number of international students, as well as students who we don't believe will get a job through us for one reason or the other, each batch. We admit based on whether we think someone will make a good Hacker Schooler.
We also try to respond to anyone who asks for clarification about a decision. I'd love to hear from you, and I'd be happy to look into your last application; especially so if you think we made a mistake! Ping me at zach@hackerschool.com.