Requires every school district to comply with enhanced safety and security standards

HB 549 requires all Missouri public school districts to implement new safety standards for every school building serving grades K-12 (called "attendance centers" in the bill). The bill mandates a standardized door numbering system for all exterior doors (starting with the main front entrance, which is not numbered), secure main entrances with visual identification for visitors, and ensures all access points are designed to be secure, maintained properly, and monitored. These requirements apply to all public school buildings owned, operated, or leased by school districts, excluding private schools, home schools, and certain other facilities. The law aims to enhance school safety through clear, visible access protocols and physical security measures.