Matthew Hatcher/Getty Images(New York) — School board meetings have become emotional battlegrounds for parents and local officials who disagree over mask and vaccine mandates as children return to brick-and-mortar learning. At least nine states -- Arizona, Arkansas, Iowa, Oklahoma, Florida, South Carolina, Tennessee, Texas and Utah -- have laws or executive orders prohibiting mask mandates in classrooms. Those rules have triggered legal challenges and public fury as many children returned to classrooms earlier this month, at a time when COVID-19 cases and hospitalizations are on the rise due...