What is the overall vibe of the class? How much work has to be done? How often is homework assigned? Do you have to do work over holiday breaks (ex: 25 page packet to be completed over Winter Break)?
Depends on the course and depends on the teacher. The workload in AP Chem is generally substantially more than for Human Geography.
I’m currently doing AP World History. The biggest thing is the volume of reading I’m doing, along with remembering names and dates.