; (2) in accordance with section 2(e)(3), share such information relating to the policy as the Interagency Coordinator may request; and (3) participate in such discussions and meetings regarding the policy as the Interagency Coordinator may request for purposes of coordination pursuant to section 2(b). 4. Study on reimbursement of mental health and substance use disorder services for juveniles (a) Reimbursement of mental health and substance use disorder services provided in preschool, elementary school, and secondary school settings Not later than 2 years after the date of enactment of this Act, the Comptroller General of the United States shall— (1) complete a study on the reimbursement of mental health and substance use disorder care professionals for services provided in preschool, elementary school, and secondary school settings; and (2) submit a public report to the Congress and the President on the findings, conclusions, and recommendations resulting from such study. (b) Services available to justice involved juveniles Not later than 2 years after the date of enactment of this Act, the Comptroller General of the United States shall— (1) complete a study to determine the percentage of the budget of the Federal Government and each State government, disaggregated by agency, used to support mental health and substance use disorder services for juveniles who are arrested or become part of the juvenile or criminal justice systems; and (2) submit a public report to the Congress and the President on the findings, conclusions, and recommendations resulting from such study, including recommendations on— (A) whether the amount expended by each Federal and State agency on mental health and substance use disorder services for such juveniles needs to be adjusted