[Gaffer]

To my mind if there can’t be one or more armed guards, then each classroom should have intercoms and heavy bullet resistant solid core doors with closeable viewing ports for the occupants.

[BCW]

Yeah - I can you tell from immediate experience - that when schools look into updating their doors - both interior and exterior - the board of education complained how expensive it is and that waiting was more practical to see what others were doing before the school budget as impacted for something that was a rush of emotion, rather than sense.

bottom line - they don’t care - they put more funding into liberal indoctrination that protection of students!

[ProtectOurFreedom]

To heck with view ports. Classrooms need embrasures.

[bravo whiskey]

I'll get flamed for this but WTH. First i believe trained teachers should be allowed and encouraged to conceal carry. Second i believe ccw parents should be allowed to carry on school property. That's not the flamed part.
There are two kinds of school attacks: one by a single deranged person and one by a trained strike team. Defending against the individual is a matter of making it hard for them to find soft targets. In this case, a good alarm system giving teachers and students time to secure and barricade doors so the shooter can't get in. If he does throwing lots of cans, chairs, books, etc. at him will most likely cause him to move on. Of course a ccw teacher would be best. The objective is to keep the shooter looking for soft targets until the LEOs arrive. The students are not going to hunt him down in the hallways with cans of food.
Against a trained strike team there are going to be a lot of dead people. Armed teachers would have to decide whether it's better to stay and defend the class or venture into the hallway. Most likely they will be outgunned and having an arms room with automatic weapons, as suggested by one Denver talk back radio host, isn't practical. Heavy locked doors would be a plus in this situation too. Throwing cans in this situation would not be practical either but it would beat huddling in the corner doing nothing.