<p>"If you are going to major in engineering or/and science, you have to take these subject tests, humanities subject tests don’t really count. "</p>
<p>You are making an assumption that is not proven, especially since admissions officers know that almost 50 % of accepted students eventually switch majors. So, with the possible exception of some STEM focused colleges, they look for students that have shown strength and ability in many subjects, especially the most selective schools. And subject test scores serve to verify that ability .</p>