to embed evidence-based practices and data-driven decision making to improve school climate and culture, including a range of systemic and individualized strategies to reinforce desired behaviors and diminish reoccurrence of problem behaviors, in order to achieve improved academic and social outcomes and increase learning for all students, including those with the most complex and intensive behavioral needs. (7) Protection and advocacy system The term protection and advocacy system means a protection and advocacy system established under section 143 of the Developmental Disabilities Assistance and Bill of Rights Act of 2000 ( 42 U.S.C. 15043 ). (8) School The term school means an entity— (A) that— (i) is a public or private— (I) day or residential elementary school or secondary school