I was also under the impression that kids who plan out STEM majors typically bypass single variable (Calc I) and other freshman intro programs through advanced

I was also under the impression that kids who plan out STEM majors typically bypass single variable (Calc I) and other freshman intro programs through advanced placement. https://www.cmu.edu/mcs/prospective/ap.html https://www.cmu.edu/mcs/prospective/ap.html as an example