Hello! First of all I’m sorry if this discussion would be in the wrong category but I’m brand new here. So I am a sophomore in high school right now, and I plan to take many AP classes junior and senior year (I’m already in APUSH and I actually have a pretty high A). Junior year I will take: AP English Lit, AP Chemistry, AP Psychology, AP Statistics, and AP US Governement. Senior year I plan on: AP English Lang, AP Biology, AP Environemental Science, AP Calculus, and AP German.
From those who have experience in these classes, which of these AP Tests would you say I should prepare the most for, and which of these classes will be the hardest? I just want to know in advance which classes/AP tests I should especially focus on. Thanks! 
I would rank them as follows (hardest to easiest):
Junior Year:
AP Chemistry (long problem sets but not too bad if you’re good at math)
AP English Lit (lots of reading obviously)
AP US Gov (reading)
AP Psych (easy reading)
AP Stats
Senior Year:
AP Biology (lots of reading)
AP English Lang (lots of reading)
AP Calculus (but could be a breeze if you’re good at math)
AP Environmental Science (easy)
AP German
I haven’t taken all these classes and tests yet, so I will speak for the ones I know.
AP Biology and AP Calculus are difficult. The Bio exam is pretty easy compared to the class at my school. The exam required a lot of interpretation of charts, graphs, and experiments- kind of like the ACT science section, if you’ve taken that. Less memorization was required than I expected. I haven’t taken the AP Calc exam, but the class is pretty hard (but not any harder than Pre-Calc in my opinion). If you’re good at math, the class is easy/fun at times. If you struggle with math, it might be a grind.
AP Gov is easy. Easy class, easy exam. Know some definitions and study the Crash Course book and you’re good to go. I took it over a year though and at some schools you only take it for one semester. It might be more difficult if it’s not a year-long class. AP Environmental Science is easy too. It will be even easier as a senior with background in AP Chem. Taking it at the same time as AP Bio is really nice because there is a significant amount of overlap in the topics covered.
AP Lang is easy and quite interesting if you like reading and are a good writer. It’s hard if you don’t like reading, don’t have the time/patience to actually read the assigned books, or struggle with timed writes. Don’t try to Sparknotes your way through unless you’re really in a pinch- it will make the class a complete waste, even if you can manage a good grade and AP score.