2023 Missouri Laws 170.315 – Active shooter and intruder response training for schools program ..

2022 Missouri Laws 170.315 – Active shooter and intruder response training for schools program ..

2020 Missouri Laws 170.315 – Active shooter and intruder response training for schools program ..

2018 Missouri Laws 170.315 – Active shooter and intruder response training for schools program ..

2016 Missouri Laws 170.315 – Active shooter and intruder response training for schools program established, purpose–mandatory drill to be conducted

2015 Missouri Laws 170.315 – Active shooter and intruder response training for schools program established, purpose–mandatory drill to be conducted

2014 Missouri Laws 170.315 – Active shooter and intruder response training for schools program established, purpose–mandatory drill to be conducted

2013 Missouri Laws 170.315 – Active shooter and intruder response training for schools program established, purpose–mandatory drill to be conducted