Can't they just suspend and subsequently expel all the students involved in gang activity and gang culture? What is the problem preventing people from fixing gang activity in elementary schools such as that one?

That would just institutionalize gang culture. Do you really think gangs really care about education? They care more about having active and indoctrinated members. You can be more active and can be easily manipulated if you don't go to school.

And a 3br house there is probably $1.4 million.

I'll just say that I paid $14,000 in property taxes alone last year

Lol Right there with ya buddy.