Authorizes the establishment of charter schools in school districts in St. Louis County

HB 498 allows charter schools to operate in specific Missouri school districts meeting defined criteria, primarily targeting districts with accreditation issues or in certain county populations. It permits charter schools in districts classified as unaccredited or provisionally accredited for three consecutive years, or in counties with 150,000-200,000 residents, while limiting charter enrollment to 35% of total students in larger districts. The bill specifies eligible sponsors (like local school boards, accredited colleges, or nonprofits) and prohibits sponsors from charging fees for charter applications. It also allows "workplace charter schools" targeting students of parents employed in business districts, with no liability for sponsors regarding charter school operations.