TexasCHLforum.com

This pretty much sums it all up right here:

3.2 BCPS and MSDHS Active Assailant Response Policies and Training
On February 14, 2018, Broward County Public Schools and Marjory Stoneman Douglas High School did not have an established active assailant response policy. There were no written and trained-on policies regarding Code Red and lockdown procedures.

-Page 49

And I would add that this statement applied to the school, the SRO, the Sheriff Department and basically everyone involved.

Sad.