You can blame the schools for misdiagnosing ADHD, and you can blame them for a poor IEP, but you can't blame them for a child not having a normal life due to one of the most tragic diseases known to man. Schizophrenia is not the kind of disease you can treat with an IEP, and it sounds like the author's son fell out of the system from a very young age. Trying to blame anything but genetics and development for his son'…
I have met very many people with a diagnosis of schizophrenia. Some of those people were drug users (or had been drug users); some of those people were "forensic" patients and were being held in secure hospitals; some of those people were in the community, on medication, with full time work.
Schizophrenia is a complex illness that expresses in a wide range of behaviours, and a broad depth of severities of behaviours. One person may hear a few voices, but be able to cope well with those voices, while another people may hear more voices which are very threatening and hard to cope with.
Please, I understand what you're saying. (Some people with schizophrenia are very ill, and will need extensive support just to avoid homelessness) but I find your comment a bit stigmatising. Many people with schizophrenia do work; not all of them work full time paid employment but it's certainly possible for someone with a diagnosis of schizophrenia to lead a full and productive life.