<p>At Caltech, you can only place out of introductory modules in Physics, Chem, Math and CS by taking Caltech’s own placement tests over the summer before enrolling. It is definitely not common for anyone to place out for 4 subjects. Caltech’s high expectations of you in terms of Core and required modules in your major make graduation in less than 4 years with a respectable GPA something of a miracle.</p>