List of Massachusetts Institute of Technology majors by size and degree. The most popular undergraduate major at California Institute of Technology is Mechanical Engineering followed by Physics and Computer and Information Sciences. And USC offers a large school vibe in a private setting. The student-faculty ratio at California Institute of Technology is 3:1, and the school has 69.1% of its classes with fewer than 20 students. California Institute of Technology, known as CalTech, is a private, nonprofit engineering university located in Pasadena, California. Also of interest, median earnings for California Institute of Technology graduates by major. A list of all 24 available majors and annual graduates is presented below. See the most popular majors at Massachusetts Institute of Technology. Of the 13 chemistry students who graduated with a bachelor's degree in 2018-2019 from Caltech, about 54% were men and 46% were women. The most popular major among Duke undergrads is … The following table and chart show the ethnic background for students who recently graduated from California Institute … STEM majors can't do much better than Caltech. Caltech Chemistry Bachelor’s Program.