<p>If your kids are going to schools that only require FAFSA then only the custodial parent’s financial information will be required. So your ex’s income will not affect their eligibility for aid. But if they go to schools that also require CSS, non custodial parent info may be required, in which case it will affect the aid they are eligible for. Important to keep this in mind when applying for schools, especially of you cannot rely upon him to contribute.</p>