My kids are recent graduates. Went K-12 through ACPS.
If you are involved parents that care about your kids' education, ACPS will offer your kids what they need. That's what always make the difference, regardless of school. Yes, you will also witness a lot of time and effort devoted to servicing the needs of kids who are struggling academically and/or emotionally. As for the safety issues... I get the concerns, but the reality is that the kids that get into those fights are unlikely to directly impact your kid.
Even most ACPS bashers admit will say things like "ACPS is bad, but MY elementary school is okay."
That's because they get to know that community, and learn to like it. I don't think you have to make a decision now. You can always switch at middle school.
Having said that... Middle school was not a great time for my kids, because... it's middle school (!) which was also not a great time for me, when I was at one of the "top" Fairfax County schools. People conflate the challenges of early adolescence as something particularly bad at the ACPS schools, but the experiences of my kids and those of family friends with kids in different are public schools doesn't bear that out.
As for high school, the amount of APs and clubs and activities that were available to my kids are truly impressive. The offerings read more like a small college than a high school.
What ACPS represents is society--ALL of society. In addition to the academic knowledge my kids gained, they will tell you they are really glad they went to ACPS because of the diversity they experienced and learned to coexist with.