Attendance no longer factors in to freshman year admittance to SEHS. The 3 components are only Spring 7th grade NWEA MAP, 7th grade final GPA, and 8th grade entrance exam. https://cps.edu/SiteCollectionDocuments/gocps/GoCPS_Scoring_SE_2019.pdf
CPS did away with attendance considerations during the swine flu epidemic years ago. For transfers into 10th grade, however, they do look at attendance in your 9th grade.