I also had mandatory pascal during my high school years. Although I knew a little of C, C++ and python at that time and felt a bit obscured about learning pascal, today, I deeply admire my teacher's choice of pascal. Pascal has a nice beginner terminal IDE with a debugger and breakpoints; it has types, stack allocation and memory planning before the program is being run; recursion is possible, and it does not have many obscure features like pointers and OOP obscurities. Today, perhaps I would suggest Julia as the first language to teach, but pascal is still at the top.