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<p>Actually, most do not. Completion of precalculus as a senior in high school is normal grade level in the US – a college freshman is expected to be ready to take calculus if needed, but not normally expected to have already taken calculus.</p>
<p>Only a few super-elite STEM-oriented schools expect a freshman to have taken calculus in high school (e.g. Caltech, Harvey Mudd, engineering at WUStL).</p>
<p>The sample four year plans for engineering majors at Berkeley assume no AP credit or other placement beyond first semester freshman calculus. Of course, students who can place into higher level math courses upon freshman entry will gain extra schedule space for additional electives, and more flexibility in when they can take required or optional courses.</p>