; and (ii) may provide a stipend to a mentor teacher or mentor principal. (B) Applications (i) In general Each teaching, principal, or other school residency candidate desiring a stipend or salary during the period of residency shall submit an application to the eligible partnership at such time, in such manner, and containing such information and assurances, as the eligible partnership may require, and which shall include an agreement to serve described in clause (ii). (ii) Agreements to serve Each application submitted under clause (i) shall contain or be accompanied by an agreement that the applicant will— (I) upon successfully completing the 1-year teaching, principal, or other school leader residency program, serve as a full-time teacher, principal, or other school leader for a total of not less than 3 school years at— (aa) a high-need school served by the high-need local educational agency in the eligible partnership and, in the case of a teacher, teach a subject or area that is designated as high-need by the partnership; or (bb) in a case in which no appropriate position is available in a high-need school served by the high-need local educational agency in the eligible partnership, any other high-need school; (II) provide to the eligible partnership a certificate, from the chief administrative officer of the local educational agency in which the teacher or principal, or other school leader is employed, of the employment required under subclause (I) at the beginning of, and upon completion of, each year or partial year of service; (III) in the case of a teacher resident, meet the requirements to be a profession-ready teacher