I'm a SAHM at the moment and we have a particular type of daycare in my country which is run by the Mums. I remember it from my childhood and when we returned here from the UK I decided to give it a go... 
DH was most bemused... Do you really want to hang around with OPC, he asked? I was like, I know, but if it's dreadful, I can always give it up as a bad lot.
But do you know what? It's actually OK. It's only three hours at a time, twice a week. I probably couldn't handle any more than that. But because it's not just coffee with a Mum friend whilst her offspring run rings somewhere in your peripheral vision, pissing you off just with their presence - and instead you're actually interacting with the kids in their environment, the vast majority of them are actually really nice.
There's only one boy out of 20-odd children who I try to avoid.
And I have to say the ones with a bit of something about them, a bit of get up and go, personality, even boisterousness from time to time - they're much better craic than the ones that just want to sit and do play doh or collage the whole time.
Dare I say it, in my experience, this is down to nature, not nurture. Or at least nature as much as nurture. If your children are happy to sit doing not very much and playing prettily, it's probably because that's their personality as much as any effort you've expended on them. Some children are sitters, some are thinkers, some are observers, some are followers, some are doers, some are experimenters, some are explorers, some are risk-takers, etc, etc, ad Infinitum... And regardless, disciplining is not done on a level playing field. Some children are quite obviously going to be way, way more pliable than others.
Anyway, I have really surprised myself, it's fair to say. OPC aren't all bad.