Tolleson Elementary School District Tolleson Elementary School District Superintendent Lupita Hightower is concerned about the rising COVID-19 cases just before the start of the school year, and a new law that blocks mask mandates at schools. Tolleson Elementary School District students are starting school in less than two weeks, but the threat of new COVID cases is already weighing heavily on Superintendent Lupita Hightower’s mind. That’s because the majority of her 2,800 students aren’t old enough to get a COVID vaccine, and a new law bans schools from requiring masks. “(It's) definitely very concerning to have policymakers and the governor really pass laws that are against what the CDC is saying," she said. "It takes local control away from local governing boards."