; (2) a description of the unique barriers faced by Indian tribes in providing adequate services to rehabilitate youth who have been adjudicated as delinquent; and (3) recommendations to improve effectiveness of prevention and treatment services for Indian youth who may come into contact with the juvenile justice system. . 211. Training and technical assistance Section 252 of the Juvenile Justice and Delinquency Prevention Act of 1974 ( 42 U.S.C. 5662 ) is amended— (1) in subsection (a)— (A) in the matter preceding paragraph (1), by striking may ; (B) in paragraph (1)— (i) by inserting shall before develop and carry out projects ; and (ii) by striking and after the semicolon; (C) in paragraph (2)— (i) by inserting may before make grants to and contracts with ; and (ii) by striking the period and inserting ; and ; and (D) by adding at the end the following: (3) shall provide periodic training for States regarding implementation of the core requirements, current protocols and best practices for achieving and monitoring compliance, and information sharing regarding relevant Office resources on evidence-based and promising programs or practices that promote the purposes of this Act. ; (2) in subsection (b)— (A) in the matter preceding paragraph (1), by striking may ; (B) in paragraph (1)— (i) by inserting shall before develop and implement projects ; (ii) by inserting , including compliance with the core requirements after this title ; and (iii) by striking and at the end; (C) in paragraph (2)— (i) by inserting may before make grants to and contracts with ; and (ii) by striking the period at the end and inserting a semicolon