5-10% for top schools typically is where I got my number from. MIT, Stanford, Caltech, UCLA, UCB all are around this range for CS. Slightly more accepting schoo

5-10% for top schools typically is where I got my number from. MIT, Stanford, Caltech, UCLA, UCB all are around this range for CS. Slightly more accepting schools jump up to 10-20% range. But all these schools are rejecting huge swaths of qualified candidates, simply because they don't have the space in a traditional campus setting.