Carroll ISD votes to end mask mandate at end of school year Carroll ISD votes to end mask mandate at end of school year Carroll ISD voted unanimously to end its mask mandate at the end of the school year. But a group of very vocal parents wanted the mandate stopped now, claiming masks are medical devices that were scaring their children. SOUTHLAKE, Texas - Carroll ISD voted unanimously to end its mask mandate at the end of the school year. But a group of very vocal parents wanted the mandate stopped now, claiming masks are medical devices that were scaring their children.