Amends the School Code. In provisions concerning student discipline policies, provides that the State Board of Education shall draft and publish model policy guidelines for the development of reciprocal reporting systems and school bus safety protocols and for evidence-based early intervention procedures. In provisions concerning the suspension or expulsion of students, makes changes concerning a student's gross disobedience or misconduct posing an immediate threat to the health or safety of students or school personnel, when school exclusions should be used, the number and duration of expulsions and suspensions, the implementation of proactive evidence-based interventions that improve behavioral outcomes for all students, non-exclusionary discipline, out-of-school suspensions of 3 days or less, model policy guidelines for the re-engagement of students, professional development, and the removal of children with disabilities who violate the student discipline policies from their current placement. Makes other changes. Effective immediately.