Your cohort default rate is a measure we use to determine your eligibility to participate in various Title IV, HEA programs. We may also use it for determining your eligibility for exemptions, such as those for certain disbursement requirements under the FFEL and Direct Loan Programs. This subpart describes how cohort default rates are calculated, some of the consequences of cohort default rates, and how you may request changes to your cohort default rates or appeal their consequences. Under this subpart, you submit a “challenge” after you receive your draft cohort default rate, and you request an “adjustment” or “appeal” after your official cohort default rate is published.