“We want to make sure that every hour of school time can have the greatest possible positive impact,” Pritzker said at a bill signing ceremony at Elgin High School. Senate Bill 2427 requires districts to adopt policies that broadly restrict the use of “wireless communication devices” during school hours. It also permits districts to exclude a high school student’s lunch and passing periods from the definition of “school time.” She said it requires elementary school students to leave their devices at home while middle school students have to place them in foam pouches during the school day and high school students are not allowed to use them during instructional time. The law requires school districts to review their policies at least once every three years and to consult with teachers’ unions, administrators, parents and community members in making revisions.