The bill, known as the Richard Lenhart Act, aims to enhance the safety and security of students on school buses by designating trespassing on a school bus as a criminal offense. It introduces a new section to chapter 9A.52 RCW, defining "school bus trespass" as knowingly and maliciously entering or remaining unlawfully on a school bus, creating a substantial risk of harm to passengers or the driver, or causing significant disruption to the bus's services. Violating this provision is classified as a gross misdemeanor, with specific exemptions for enrolled students, law enforcement, authorized personnel, individuals with written consent, and emergency situations.

Additionally, the bill empowers local law enforcement to enforce these provisions and mandates collaboration between school districts and law enforcement to establish effective enforcement protocols. It also requires educational programs to raise awareness about the importance of safety on school buses and the consequences of trespassing. Furthermore, subject to available funding, school districts must place visible warning placards on public school buses regarding the consequences of violating the trespassing provision. The bill includes a severability clause to ensure that if any part is deemed invalid, the rest remains effective.