This is a very complete, highly visual and thoroughly annotated presentation on the Top 25 American School Shootings. There is a 25 point multiple choice test which concludes the presentation.Go to the slide box on this page to see actual slides from the presentation.I am a lawyer. In reviewing all of these cases the same issue came appearing again and again: were they mentally ill? The answer is mostly "Yes." Although this doesn't rise to meeting the insanity defense in most cases, it has kept some cases mired in competency issues from day 1 of the arrest. Most of the perpetrators end up dead so that cuts down on prosecutions but it is disturbing that this many individuals in the schools have psychiatric problems.All of the missed warning signs which presented in the cases are covered here as well.These are the top 25 school shootings in America. They are listed in ascending chronological order as to the date of their occurrence. The focus is on the shooters, not the victims, to discover what characteristics they share.The overwhelming number of them are male. There are only two female shooters. The other overwhelming characteristic they share is that they were either mentally ill or were demonstrating behavior which indicated they might be mentally ill. Only Charles Whitman in Texas had a physiological cause for mental illness, a brain tumor.Most of the shooters ended up dead at the end of their rampage. They either killed themselves or the police killed them (called suicide-by-cop). All levels of school are involved from elementary to graduate school. All kinds of schools are involved, cutting across all income levels and races. No schooling seems to have been safe from being a potential target.In sheer numbers of shooters and occurrences, California led the nation. The shooters rarely “fit in” at their schools and are almost always described as introspective and quiet.There usually have been events in their pasts which indicate they have behavioral problems but most of them did not have criminal problems. Instead, they either spent time in psychiatric inpatient or outpatient treatment or subsequent investigations yield the information that they should have spent time in such treatment.Failing in school and blaming it on others in that school was one reason which did repeat among shooters.