<p>The reason why many potential Engineering students don’t know what they want to major in is because there aren’t many as many Engineering courses in high school in the first place. It might be just my high school, but they do split the sciences into Bio, Chem, and Physics, but there’s only one Engineering course. And I’ve never seen an Engineering course as a pre-requisite for admissions into any program, whereas Science courses are common pre-requisites. The pre-requisites for Engineering programs (at the schools I’m interested in) are Calculus, Physics, and Chemistry. Now, how is anyone supposed to decide which specific Engineering stream he/she is interested in based on taking Science courses in high school? Most high school students don’t even know the difference between the different streams until Junior year. </p>
<p>Just take a look at the ETS tests. AP exams are offered for Bio, Chem, Physics, and Environmental Science. Obviously, any Science major would know well the difference between the different streams. But with Engineering, just because you like Biology and Engineering, it doesn’t mean you’d like Biological Engineering.</p>