<p>“For competitive college STEM fields, most kids have BC calculus, probably multivariate calculus and some linear algebra before college” </p>
<p>From reading CC threads, it does seem that most kids applying to STEM schools have at least Calc AB. But I think multivariable calc and linear algebra is not so common, except maybe for the very top STEM schools. In many districts, it is not available without college cross-register.</p>