Ok, if you are going to harp on it: You have long asserted that the Hamilton County Sheriff conducted their investigation, and you are satisfied with the results.
Well, we're starting out pretty good.
By this, I assume you have intel regarding what this departments procedures are?
I know what police procedures are in general, yes. You're the one making the off the wall claims about CSI and ****.
Still not clear on that one, but whatever.
You made a positive claim with nothing to support it. That's what I said, and you've done nothing to support your statements still.
I opine that it is common knowledge that such a petty police matter would not result in an in depth investigation.
Someone went to the hospital and 5 people are being charged. There was a literal assault (part of the charges). If that's petty to you, ok.
My opinion is supported on similar grounds as yours: being an accused, common knowledge, and peripheral involvement in other investigations. One, where I was a witness to an alleged terroristic threat. The police asked me 'did this guy threaten that guy?' I answered 'no, they were arguing about money'. That was pretty much it. No further elaboration or background investigation. No CSI team and psychologists rolled out.
Probably because, and here's the shocker, you had no further ******* information to give, ya think? Terroristic threats are NOT the same as a physical assault that was caught on video

.
I guarantee that the first thing the police asked the people directly involved was, "When and how did this all begin?" They probably wrote it down, turned it in, and during the charging\trial phase that information was relied on because you can't just charge people with **** without details. Common. Sense.
So we both assume what police procedure would have been, based on our experiences and common knowledge. But you insist on pedantic and red-herring evidence presented. It doesn't matter. There is no reason to think that elaborate background unsubstantiated initial causes were studied. It was a school bus fight resulting in ouchies.
The difference is my argument is supported by the police saying they did an investigation and directly refuted the claims by the mother. Your argument is based on nothing, admitted to being "assumed", and supported using fallacies. It would be grossly incompetent to not dig into the rest of what happened. Especially since, by your own quote, there were accusations of previous encounters. This isn't rocket science.
eta: I love the quandary you create, too. If I bail, it's a character flaw. If I sustain discussion, I am 'Thermaling' the thread. Oh, and you pepper your posts with personalized insults. You really think no one else sees this?
I don't care what anyone else sees at all. If someone wants to call out my logic, my statements or my position they can feel absolutely free to quote me and lay out their rebuttal.
'Therminaling' isn't because you sustain a discussion. It's because the bulk of arguments you make in the threads that you and I seem to participate in are based on your own anecdotal experiences and assumptions.