A months-long internal investigation of the Olathe East High School shooting that left three injured — and a student charged with attempted capital murder — found that the district must improve communication during a school crisis. As a result, the Olathe school district announced that for this coming school year, all staff will wear a badge equipped with a button that allows them to call for help during emergencies, and lock down a school if needed. The district also will add more safety personnel at high schools. “We know that building trusted relationships with our students is the best way for our educators to create a safe space for students to learn,” Superintendent Brent Yeager said in a statement. “However, we also recognize that emergency situations can occur at any moment, and it is best to have resources in place to support our students and staff in times of crisis. Our goal is to give our educators peace of mind that they can call for help at anytime, anywhere on school...