Good at Math, Terrible at English: What schools shall I apply to?

I agree, I don’t think you are in as dire straits as you think you are. A 690 isn’t the end all be all (or, at least I hope it’s not, I have a 690 in math and applied to Ivies lol).

Schools that are going to have less of an emphasis on English though would probably be the usual suspects. CWRU, Olin if you’re thinking engineering, Caltech and MIT as reaches etc.