AP scores are not considered in admission decisions for the UC’s or CSU’s. SLO/CPP puts a huge emphasis on test scores along with GPA so your statement is not true @applicationhelp2.
CPP admits by eligibility index and major just like all the CSU’s (except SLO uses MCA points) so GPA and test scores are the main criteria. AP scores are not even mentioned as admission criteria.
SLO bases their admission criteria on several factors but GPA/Test scores garner the most MCA points in their MCA calculation. SLO unlike the rest of the CSU’s does consider EC’s but they only account for 10% of the MCA points.
https://admissions.calpoly.edu/applicants/freshman/criteria.html
CSU’s however are generous with AP credit which can help reduce your time spent at these schools.
Here is the Freshman profile for SLO:
https://admissions.calpoly.edu/prospective/profile.html
The lowest average ACT of 28 and SAT 1315 is in the College of Agriculture. OP is way below the 25th percentile for both.
For SLO, major has a huge impact on your chances since they admit by major. The acceptance rate can range from 8% for Computer Science to 90% for Dairy Science. Intended major will make a huge difference.