Because BBS students come from a variety of academic backgrounds and receive training at Yale in a wide array of disciplines, there are no common courses required of all BBS applicants. In general, successful applicants will have completed undergraduate coursework in biology, chemistry at least through organic chemistry, physics, and calculus. Each BBS Track may have more specific course requirements, which are described on the Track pages. Applicants must achieve a score of at least 600 on the paper version of the exam, 250 on the computer-based exam, and 100 on the internet-based exam. In addition to meeting general BBS requirements, applicants are expected to have a firm foundation in the biological and physical sciences. It is preferred that students have taken courses in biology, organic chemistry, biochemistry, genetics, cell biology, physics, and mathematics. Actual course requirements, however, are not fixed, and students with outstanding records in any area of the biological sciences may qualify for admission. There are no specific grade requirements for prior course work, but a strong performance in basic science courses is of great importance for admission. For more information about the Immunology Track, please contact any of the Immunology leadership.