; or (ii) a deferment due to unemployment described in section 427(a)(2)(C)(ii), 428(b)(1)(M)(ii), or 455(f)(2)(B). (E) The student is in one of the following periods of forbearance (as applicable to loans made, insured, or guaranteed under part B or this title): (i) Medical or dental internship or residency forbearance under subclause (I) of section 428(c)(3)(A)(i). (ii) National service forbearance under subclause (III) of section 428(c)(3)(A)(i). (iii) Forbearance for active duty service in the Armed Forces under subclause (IV) of section 428(c)(3)(A)(i). (iv) Forbearance for National Guard Duty under section 428(c)(3)(B). (v) Forbearance due to military mobilization or other local or national emergency as authorized by the Secretary under section 685.205(b)(8) of title 34, Code of Federal Regulations (as in effect on the date of enactment of the College Affordability Act). (vi) Teacher loan forgiveness forbearance under section 682.213(e) or 685.205(a)(5) of title 34, Code of Federal Regulations (as in effect on the date of enactment of the College Affordability Act ). (4) Participation rate (A) In general An institution that demonstrates to the Secretary that the institution's participation rate is equal to or less than 20 percent for any of the 3 most recent fiscal years for which data is available shall not be subject to subsection (b). (B) Determination For purposes of this paragraph, the term participation rate means the percentage of the institution's regular students, enrolled on at least a half-time basis, who received a covered loan for a 12-month period ending during the 6 months immediately preceding the fiscal year for which the cohort of borrowers used to calculate the institution's on-time loan repayment rate is determined. (C) Data An institution shall provide the Secretary with sufficient data to determine the institution's participation rate within 30 days after receiving an initial notification of the institution’s draft on-time repayment rate. (D) Notification Prior to publication of a