CALCULUSI myself went through a maths-natural sciences heavy special program for my second level in a lycaeum, but in Uni opted for the Public Law studies. I went to an optional course of Basics of Public Economics, and was shocked in one day to see the prof unsuspectedly drawing a graph on something and then suddenly ask: "Now, how do we know at which point the growth seizes from happening?"
I had done enough derivatives in my long form lycaeum maths under a very capable, very demandind and very non-PC teacher to instantly know what he was after there, but it still was like watching a car wrecking in slow motion for I thought I had put all this behind me.
I can't imagine what my fellow students who had opted for the short form maths were feeling.
25 years ago I gave a present of a very comprehensive American university level calculus textbook several hundreds of pages long to a relative preparing for the LC. He told me his maths teacher photocopied drawings from it and posted them all over the walls of the classroom as a teaching aid. The quality of American textbooks is extremely high.