The hardest majors to get into at Cal Poly San Luis Obispo are typically found within the College of Engineering and specific scientific disciplines, such as Aerospace Engineering, Mechanical Engineering, Software Engineering, and Biological Sciences. Because the university evaluates undergraduate applicants through a strict, major-specific selection index rather than a generalized campus-wide pool, hyper-competitive STEM fields receive thousands of applications for a very limited number of available seats, forcing admission standards to skyrocket and requiring near-perfect weighted GPAs.