My school requires me to take a calc 3 course and differential equations for my major. I am scheduled right now to take differential equations in the summer, and calc 3 in the fall of this year. My school recommends they be concurrent classes, but I'm just too strapped down by my already almost 20 credits. Does this seem advisable? Is differential equations before calc 3 a good idea? I would prefer to get these classes out of the way now so that I don't have to take, say, differential equations in the next spring, as I would like that available for another class.