[HCS]

The best I can tell from the Courier Journal is that charter schools are public schools run by school boards of public school districts:

The measure approved Friday is a departure from previous charter school bills in that it places no limits on where or how many charter schools can open. The bill gives authorizing power to mayors in Louisville and Lexington and local school boards across the state. Authorizers are charged with vetting the applications of parties who seek to open charter schools and deciding which will open. After those schools open, the authorizers would then be responsible for ensuring the schools are operating under agreed-upon conditions.