; and (ii) the borrower is unable to continue working in a qualified teaching position during the period of deferment, due to— (I) extenuating or unforeseen financial circumstances or health reasons; or (II) other extraordinary circumstances as determined by the Secretary. (6) Definitions In this subsection: (A) Eligible Federal direct loan The term eligible Federal Direct Loan means a Federal Direct Stafford Loan, Federal Direct PLUS Loan, Federal Direct Unsubsidized Stafford Loan, or Federal Direct Consolidation Loan. (B) Part-time The term part-time , when used in reference to a teacher for a particular school year, means a teacher who works in such year a number of hours that is not less than 50 percent, but less than 100 percent, of the hours worked by an average full-time teacher in the local educational agency that serves the area where the teacher is employed. (C) Qualifying teaching position The term qualifying teaching position means part-time or full-time employment (not including a substitute teaching assignment)— (i) in— (I) a public or nonprofit private elementary school or secondary school, that, for the purpose of this paragraph and for that year— (aa) has been determined by the Secretary (pursuant to regulations of the Secretary and after consultation with the State educational agency of the State in which the school is located) to be a school in which the number of children meeting a measure of poverty under section 1113(a)(5) of the Elementary and Secondary Education Act of 1965, exceeds 70 percent of the total number of children enrolled in such school; and (bb) is in the school district of a local educational agency that is eligible in such year for assistance pursuant to part A of title I of the Elementary and Secondary Education Act of 1965