in subparagraph (B)(ii), and the individual has been employed as a full-time teacher for 5 complete school years in a school described in subparagraph (A) of subsection (b)(1) or in a school of the defense dependents’ education system under the Defense Dependents’ Education Act of 1978 ( 20 U.S.C. 921 et seq.) that is located outside of the United States, and met the requirements of subparagraph (B) of subsection (b)(1). (B) Qualified military spouse defined In this paragraph, the term qualified military spouse means— (i) with respect to a year, an individual who— (I) during the previous year, served as a teacher in a school or location meeting the requirements of subparagraph (A) of subsection (b)(1) and met the requirements of subparagraph (B) of subsection (b)(1)