34 C.F.R. § 668.202
(a) General. This section describes the four steps that we follow to calculate and apply your cohort default rate for a fiscal year:
(4) Fourth, we apply your cohort default rate to all of your locations—
(b) Identify the borrowers in a cohort.
(c) Identify the borrowers in a cohort who are in default.
(1) Except as provided in paragraph (c)(2) of this section, a borrower in a cohort for a fiscal year is considered to be in default if, before the end of the second fiscal year following the fiscal year the borrower entered repayment—
(2) A borrower is not considered to be in default based on a loan that is, before the end of the second fiscal year following the fiscal year in which it entered repayment—
(d) Calculate the cohort default rate. Except as provided in § 668.203, if there are—
(1)
(2)
(ii) Dividing the total number of borrowers in that cohort and in the two most recent prior cohorts who are in default, as determined for each cohort under paragraph (c) of this section by the total number of borrowers in that cohort and the two most recent prior cohorts, as determined for each cohort under paragraph (b) of this section.
(Authority:20 U.S.C. 1070g, 1082, 1085, 1094, 1099c)