Adding on to the information posted by @ucbalumnus, neither Cal Poly SLO or Pomona require a Portfolio for Freshman applicants. These Cal states are test blind, do not accept essays or LOR’s so they admit mainly on Stats with the CSU GPA (10-11th grades) for CPP and the SLO GPA (9-11th grades) being the most important.
Target projections for Architecture admit rate at SLO is around 22%.