@SmudgeTheInsultCat I don't think there are any earth-shattering changes to the things I learned in high school. Math is still math, chemistry is still chemistry, physics is still physics. Hell, even 'keyboarding' hasn't changed since we're still all using QWERTY keyboards.
The only thing I can think of off the top of my head is that we have a few more answers to questions (Higgs Boson, pictures of extra-solar planets) that we didn't have before.
@JustinDerrick @SmudgeTheInsultCat Off the top of my head, in the field of Cellular Biology, I was taught the Endoplasmic Reticulum and the Golgi Bodies were separate structures but both involved in protein synthesis. Now we know the ER and GB are the same structure, the ER is viewed in a longitudinal section and the GB is viewed in a cross section.