The ACT composite score is what is used in the eligibility index calculation for all the CSU’s (Cal Poly Pomona included) except Cal Poly SLO. SLO does not use an eligibility index for admissions but an MCA score and they will look at the ACT Math and English sections. SLO will all superscore along with all the other CSU’s. Your English and Math sections are also important for waiving the ELM (Math placement) and EPT (English Placement) tests required by all the CSU’s. High enough scores fulfill these required tests.