I already applied in November to multiple UC’s. I already know the dangers of dropping an AP Calc class, but it is already being done. How do I contact the universities that I’ve applied to and tell them that I am dropping an AP Calc class?
Talk to your guidance counselor Monday and let him/her help you.
I’ve already talked to the guidance counselor at my school and they have been of no help. 
They told me I need to figure out on my own since that is the path I want to take.