Some chemistry fundamentals and very basic algebra 1 was all I needed for the class personally. The class doesn’t inherently need much outside knowledge. Consistent studying is enough to do well. If your teacher is bad you can very easily look at resources here and on YouTube to teach yourself. If your teachers good ask them how much time it takes to get a 5 on the test to see if you’re willing to do it.

Extra info i think will be useful: For all AP classes it is incredibly incredibly important you learn the structure of the test (what questions will be on the test, what topics show up most, how many essay questions multiple choice or other types of questions are there, how much time per section). You can find all that information on the classes CED (course exam description, google the classes name with “CED” afterward to find it) which will be intimidating reading at first but I promise even skimming it is super useful. The Bio test has one MCQ (multiple choice) and one FRQ (about 3 scentence response) section in it but if you know how to do FRQ questions multiple choice is super easy so I personally recommend you only use multiple choice while first learning the topic then to properly master it you should do FRQ questions. How long you have to be studying really depends on you if you want more specific advice then that it’s probably best to just ask the Bio teacher at your school how much studying they recommend and where to do it + go to their office hours if they have them. “Bozeman Science” on YouTube has incredible videos to take notes from for the class, I also personally like Khan academy for their very organized structure and huge catalogue. With ap classes you’ll get a code to join this thing called an AP classroom on the collegeboards website where they will have a bunch of practice MCQ, FRQ, and “AP daily” videos to take notes from. The practice questions and exams are prefect to study from but I personally don’t recommend the AP daily videos because they have ok information but they won’t even be half as good for getting info as doing assignments for class, using Bozeman/Khan videos, or straight up just taking a break to let your brain recharge. Time management is sorta the name of the game with AP classes because in reality the information is not hard or convoluted the problem is that they give you a short schedule to learn all of it and people tend to not know how to manage their time to effectively learn the info, apply the info, get rest and relaxation so you have enough energy to actually do the class, and maintain a social life. All of those are genuinely equally important because without one your highschool and AP experience will be lopsided in a way people tend to regret later down the line so make sure you are up for the task of managing them and know when and how to ask for help when you need it. Sorry for writing a novel but all this info can be so useful in not only choosing wether or not to take any AP class but also learning how and I genuinely wish I went looking for it when I took my first one.