In reading this morning, the school talked to the student the day before as he was found searching for ammo on his phone. The day of the killings, he made the drawings and was reported. He was taken out of class and parents were brought in. He claimed his drawings were for a video game he was designing and wanted to be a game designer. The school asked for him to be sent home, but the parents refused. The parents and staff did not feel he was a threat at that time. The school chose to keep him there rather than send him to an empty house. Soon thereafter, he started shooting. There was no mention of a school resource officer until he helped arrest the kid in the bathroom.
Sad, sad deal. I can't say that I believe everything that could have been done was, but I don't know that all involved weren't reasonable. I still say take him out until a threat assessment is done, but if he can BS through it, we're in the same spot. This may just be the worst case scenario of a perfect storm. End of the conversation for me, we will see where it goes.