I agree with you totally. My kids school has about 6 or 8 security guards posted in front of as well as inside the entrance of the school. They know all the kids as well as the parents. They can spot in a second someone who is a new face, like a new teacher/substitute,or as demonstrated recently,someone who has evil intentions,and they take care of the situation before the person is IN the building.
In contrast to my school,I substitute in a couple of girls schools in flat bush and I have to say the lack of security is very obvious. In one school they have glass doors that require you to be buzzed in after the person at the front desk looks at you,but that person is a very sweet older lady who has to be in her high 70s or low 80s! She is no match c”vs for an armed person who can get thru the glass doors in a second. When I go there for work I always think of the difference in security. The second school has one much older man,who I don’t think is armed manning the front desk. Any quick and fast criminal can take him down in no time as he is heavy and obviously walks slowly due to a bad leg. And his English is no good either.
Oh,I should mention that in my kids school the guards ARE armed. The families all have to pay like 500$ every school year for security,in addition to tuition and registration and book fees. But I don’t think anyone minds the extra expense.