Scared to call cps for the kids at my job

I work at a daycare as a summer lead teacher for school-age children. There's this family.

One child is 10 and bipolar but he's violent. The rest of them are misbehaving to a very serious level. They have no respect or manners. But I've been informed that because of them, school age is no longer able to combine with other classes because I quote from my manager, "They are a danger to themselves and others". Besides that, there have been disturbing things that I've been told but I personally have not witnessed, and they have not paid their tuition at all. Even for last summer.

I will say this, children definitely deserve better in terms of adult figure family wise. Last summer, the whole family was supposed to move to another city, but I guess what happened is that the other person (who is very young and has 5 kids) took her eldest child and likely the baby that was born last year, and got married to this guy and moved to DC without the 2nd, 3rd, and 4th child. So the kids live with Grandma. But Grandma wants the mom to take the kids by the time school ends.

I've been encouraged by people in other Reddit threads to call CPS, but I've been told that CPS has gotten involved before, but ofc I don't know if this is 100% true. I'm scared to call because what if they get taken away and their life becomes worse? Or what if nothing happens? This is such a scary decision to make.

As for the concrete, I've seen with my own eyes possible signs of neglect:

Often repeating outfits

Dirty clothes

Horribly misbehaving

Obv the whole mom leaving them with the grandma

Sometimes begging for food.

Ngl im writing this, and i feel like i already know the answer to my question.