From what I know, EFC= estimated family contribution. At first, you were estimated to be responsible for 403. But, when you corrected your information, and now considered to provide half the support of five members, your EFC number went up to 658, only meaning you are responsible for more. At least that's how it works in MA. From there, they determine what your financial need is. If your EFC is 658, but a year of school costs $2,000, you're entitled to aid. As long as your EFC number is lower, then what your school considers, "what a year of school costs", you'll get aid. From what I know (helping my self and others),I wouldn't worry, you will definitely get aid. Unless, for some reason your school only costs 300 a yr., then you don't get aid. I hope I helped.