I handle the kids ok. I work with 6 weeks - pre-k age and there's really not much they can do that gets me stressed out. I do not watch school age children because they are just not my age group.
I grew up in a big family and have 4 kids of my own that are still young. If things start getting too noisy we switch gears and I pull the group in for a quieter activity.
Parents set me off too. Fortunately right now I have good families and parents. When I get a difficult parents I get to the point of having tension headaches so they get three chances to get on board or they're done. My kids deserve a mom who isn't mentally exhausted by the end of the daycare day.