Haha! I went to that type of high school. We had to specialize in bio, physics, engineering, or "custom" (which meant planning out a program for approval and was usually a math/comp sci or chem program). Senior year we did a year-long thesis type project in our declared field. We had all the AP sciences, plus other college-style classes like O-chem and microbio. I was an engineer, but I would have dated a bio or chem person. I think they can cross over for sure. :-)