IL HB3767

Raises minimum age for secure detention from 10 years old to 13 years old effective July 1, 2021, with transitional provisions allowing 11-year-olds until July 1, 2022 and 12-year-olds until July 1, 2023.

Requires local service providers be contacted and given opportunity to develop detention alternatives for minors aged 11-12 before detention is used, with probation documenting monthly to the Illinois Juvenile Justice Commission when alternatives fail.

Establishes that placement away from home must be "last resort and least restrictive alternative available" and ensures detention is used only when there is probable cause, serious threat to public safety, or demonstrable record of failure to appear within last 12 months.

Adds new duty to Illinois Juvenile Justice Commission to study and make recommendations to General Assembly regarding youth services availability to reduce detention use and prevent deeper criminal involvement.

Raises minimum age for detention in juvenile detention homes from 10 years old to 13 years old in sentencing provisions (Section 5-710) and probation revocation hearings (Section 5-720).