Revises and codifies schedule for childhood lead screenings; requires lead screenings as precondition of child's initial entry into school system.

This bill requires lead screenings for children aged six months to six years at specific intervals: between 9-18 months, 18-26 months, and immediately before school entry (starting 2024-2025). It directly affects young children, parents/guardians (who must provide screening documentation), healthcare providers (who must conduct screenings), and schools (which must verify results before enrolling pre-K or kindergarten students). Schools cannot admit children without proof of the required screening, and healthcare providers must document results in permanent health records and share them on school enrollment forms. The law updates existing screening schedules and mandates documentation to ensure early detection of lead exposure, a known health risk for young children.