Many school districts have banned cell towers. Communities are opposed to cell towers at schools due to the radiation exposure. Numerous studies document health effects from long term exposure to cell tower radiation. 

Many school districts have stopped renewing contracts or considering proposals for new cell towers.

Many local governments restrict cell towers near schools with cell tower/school setbacks. 

MORE INFO HERE  Kent Chamberlin Professor & Chair Emeritus Dept. of Electrical & Computer Engineering  University of New Hampshire Letter Regarding Verizon Cell Tower 

Learn more about school cell towers here. Source: Environmental Health Trust