The two fields that I am thinking of going into are astrophysics and medical (probably pharmacology) and I can’t find Harvard’s course requirements for these two subjects anywhere. Does anyone know what the IB required courses are? and which ones should be HL or SL?
H doesn’t require its applicants to declare a major. How then can there be a list of HS course requirements for any area of study? You also might check that list of concentrations that Harvard offers… Astrophysics, yes. Medical? Pharmacology? No.
All students apply to Harvard as Liberal Arts majors and choose a concentration during their sophomore year. That’s true no matter what your interests, or intended major, although Harvard does have suggestions for what every applicant should be taking in high school: https://college.harvard.edu/admissions/preparing-college/choosing-courses