Hey man, it really depends on ure ranking in cohord and how well ure scu performs in exams, as that determines how much ure scores scale up and down by. I reccomend using 10 min quiz ss cal to predict study scores.
Example - I got to BHHS our sacs are ususally hard. For example my methods calculus SAC avg was 38%, and I got a 70% which when I asked my teacher would get a high 30s s.