What scores to send

So I took the SAT twice and now that I’m applying to colleges I don’t know whether to send both my scores or not. There’s only one school that requires me to send both but i don’t know what to do about the others. On my first exam I got a 1550 and on my second one I got a 1950. What should I do?

Were any of the subscores higher on the 1550? Do the colleges superscore? If not just send the last one.