Security or Government?

I was reading the OP-ED article by the mother of an autistic child, Lori McIlwain in the New York Times, in which she encompasses the topic of autistic children wandering around and getting lost. She commented on how this happens in between classes at school. She recalls different cases in which autistic children left school, wandered into a highway and were tragically hit by the passing cars. She not only takes a position against the government for not funding enough for these common incidents, and doing so for elders with Alzheimer's. I know it is unfair that the government doesn't pay that much attention to this cases, but I couldn't help and think about security. 

There is no way in hell I can run away from school without vandalizing the school gates and not getting caught. In order to leave school I have to pass through one of the main gates, and they security guys are not going to let me out just because I want to. In other words, my school is a jail. There is no way I can escape from it. This led me to think how children can escape their schools? Isn't there a front gate? Isn't there some sort of entrance they have to cross in order to get out? Maybe the difference relies on the fact that these children live in America. The place were there are no gates in schools, probably because it is not dangerous and necessary, unlike here in Bogota, were children are at risk of being mugged. Furthermore, being a school that accepts autistic kids, and is away of their common occurrences why don't they implement gates? 

The root of the problem is the government, I know, but there are others ways to prevent unwanted deaths and missing children. The government though being the cause for lack of funding, isn't the only one that can potentially help autistic kids. For instance, the school (a private one in this case) may help by installing a closed perimeter or circuit, and taking the usual security measures to keep children away from lakes and pools. I understand this article was written by a suffering mother, who lives to tell the unfairness of the issue. However, there are different ways of solving the problem.