Whoa! … put the brakes on! You’re a senior in high school now and you don’t have to choose your major for roughly two more years. Of course, it’s useful to have some interests in mind as you build your college list because this can help you to make smart matches. But, on the other hand, you don’t have to declare a major for quite a while. During your first two years in college, you may discover new areas that intrigue you, and so it’s possible that both philosophy and biology will be shoved onto the back burner. However, if your present passions continue, it should be easy to double major in these two disciplines, if you so choose.
Depending on where you go to college, you will be required to elect 10 to 12 classes in your major field. A typical undergraduate takes 32 classes (4 classes per semester for 8 semesters) but this could vary quite a bit depending on your college’s credit policies and academic calendar. It’s not unusual for students to take 40+ classes as undergrads. Thus, even if you were to major in both philosophy and biology (or genetics, which is commonly a concentration within the bio major although sometimes a major unto itself), you would only tie up 20 to 24 classes in order to complete the majors. This would still allow you to take somewhere in the neighborhood of 8 to as many as 20 classes outside of your two majors.