In Los Angeles, the ban on co-locations has long been on the agenda of the teachers union and could affect 11,000 students at charters that share a campus, says Myrna Castrejon, president of the California Charter Schools Association (CCSA), which hasn’t ruled out a lawsuit against the district. All told, charter enrollment likely grew in the 2022-23 school year, continuing a pattern of incremental expansion, according to an estimate by the National Alliance for Public Charter Schools (NAPCS), which plans to release enrollment data for last year in November.