; or (bb) quasi-experimental research designs. (II) The model conforms to a promising and new approach to achieving the benchmark areas specified in paragraph (1)(A) and the participant outcomes described in paragraph (2)(B), has been developed or identified by a national organization or institution of higher education, and will be evaluated through well-designed and rigorous process. (ii) Majority of grant funds used for evidence-based models A State may not use more than 25 percent of the amounts paid to the State for a fiscal year under section 1903(a) for purposes of conducting a program described in subsection (a) using the service delivery model described in clause (i)(II). (iii) Criteria for evidence of effectiveness of models The Secretary shall establish criteria for evidence of effectiveness of the service delivery models and shall ensure that the process for establishing the criteria is transparent and provides the opportunity for public comment. (B) Additional requirements (i) The program adheres to a clear, consistent model that satisfies the requirements of being grounded in empirically-based knowledge related to home visiting and linked to the benchmark areas specified in paragraph (1)(A) and the participant outcomes described in paragraph (2)(B) related to the purposes of the program. (ii) The program employs well-trained and competent staff, as demonstrated by education or training, such as nurses, social workers, educators, child development specialists, or other well-trained and competent staff, and provides ongoing and specific training on the model being delivered. (iii) The program maintains high quality supervision to establish home visitor competencies. (iv) The program demonstrates strong organizational capacity to implement the activities involved. (v) The program establishes appropriate linkages and referral networks to other community resources and supports for eligible families. (vi) The program monitors the fidelity of program implementation to ensure that services are delivered