CSU GPA: 4.17
ACT:English (24), Math (33), Will retake to rise the English score
MCA: roughly 4300
From prior posts and my student’s admissions experience – an MCA Score of 4500 or above is competitive for these very difficult admit majors at Cal Poly. Retake the English to get test score up.
Since CS has the lowest acceptance rate (10%), you need to aim for a 4700+ MCA to be competitive. SE would the easier of the three majors for admission purposes. You do realize that you can only select one major as your 1st choice. You can pick an alternate major, but only rarely does SLO consider your alternate.
As @Dadfan said, if there’s time, retake the ACT. Practice the English section by doing timed tests frequently prior. You have a solid math score in the bank. Poly only uses Math and English and they super score. There might not be time though. Sorry, I’m not familiar with the deadlines. Good luck.
Does the admission completely depend on the MCA?
Solely, with the possible exception, and I’m not certain about this, of highly recruited athletes in the money sports, primarily mens football and basketball. They MIGHT get a bump outside of the MCA.