Yea, that is a realistic scenero , I was already 6 foot tall in my freshman year. My home room teacher was about 5 foot tall. There is no way, in any universe, she would have been able to defend herself from me if I wanted to hurt her. Ex Military Armed security on the other hand , in every entery way, and one on every floor ( if multiple floors are present in the school), I am 100% for.