; (iii) implementing technology to provide notification to relevant law enforcement and first responders during crisis situations; (iv) implementing any technology or measure, including hiring school security officers, or installing any infrastructure, with evidence-based effectiveness (to the extent the State involved determines that such evidence is reasonably available) to increase the safety of school students and staff; (v) implementing any digital content monitoring technology to assist in the monitoring of communication on school-provided platforms, as long as the system does not transmit data outside of the United States and uses human review instead of automated alerts to increase safety of school students and staff; (vi) implementing any technology or measure, or installing any infrastructure, for school safety reinforcement, including bullet-resistant doors and windows