I'm inclined to say higher than you'd think, but more information would be required XD
At our gymnastics club, there are a LOT of parents who are on their phones instead of/while watching their kids. It's entirely possible they're just mindlessly scrolling through their feeds while they have a moment to do so. I know a couple of parents who do that, but both are also heavily involved in their children's lives, so while they're sitting there they're also answering emails and other messages, online shopping for stuff they or the kids need, and way too many people use Facebook to coordinate stuff (this regularly happens with the gymnastics club so someone usually has to remember to tell me about it if it's important), or reading stuff that schools have sent out about events or excursions or whatever.
As the levels get higher and the kids usually get older, some of the parents are just not in the building at all. The usual assumption seems to be that they're swanning around the shops having coffees or something, but I've spoken to a lot of the people who drop and run and they're running another child to another activity, running errands, going grocery shopping, going home to clean and do dinner, pretty much everything but swanning around the shops drinking coffee, although a couple of lucky ones occasionally have a coffee date with a friend or relative in that time or otherwise squeezing in some other form of relaxation.
And then there's people like myself and another friend who are volunteers there so we're often running around doing stuff instead of watching our kids. Better or worse because we're "there" but not really? :D Someone usually gets our attention if there is something we need to watch though XD