There are a lot of options. For math, I want to continue taking more calculus, as well as taking statistics. For biology, I definitely want to take Human Infectious Diseases, as well as Ecology. Plant Physiology and Animal Physiology are also options. For chemistry, there is Biochemistry, Organic Chemistry, and Analytical Chemistry. I don't know how much physics I will take, but my options include AP Physics C, or Thermodynamics and Modern Physics. There are also electives I want to take - like Number Sense, a course geared towards preparing for math competitions. I don't know yet what I'm going to choose, but it's going to be a hard choice.
Of course senior year is going to involve more than just coursework. I know that college applications are purportedly a time-sucking vampire. I'm also interested in doing research. Of course I want to keep up with my extracurricular activities as well - Venture Crew, Mu Alpha Theta, Science Bowl, and probably others. Eventually it will all work out - for now I just have to decide what I want most.