Ive never heard anyone need an S grade. How long have Cambridge been asking for 1,1? I always thought it was 1,2 with a 2 in either STEP II or III with a little bit of variation from college to college. A couple of years ago, St Johns used to require a grade 1 in either STEP II or III, so you could fail STEP III for example and still get in provided you got a 1 in STEP II. Dont know what it is now though.