Any good movies or TV shows or books that relate to school shootings?

I already know about American Horror Story so don't mention that. I just love scary high school stories, and high school movies in general.

There is actually a crime series on Netflix called Quicksand which I found very entertaining.

Season two for 13 Reasons Why focuses partially on a student who plans to commit a school shooting but the ending for that season is retarded

There is a thread I made that is pretty comprehensive in regards to movie and tv shows that depict/focus on mass shootings, here is the link:

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My favorite one is Bullet Time because of its realism. Isn't so over the top and dramatic like many other school shooter movies.