My son initially went to a childminder for over a year after I returned to work and it was wonderful. He developed so much, I had progress reports on him, he can't home with artwork and tasks he'd been set etc, I was really impressed.
When he was about 2.5 years I took him out and put him in a nursery because I thought it would be more beneficial for him. He'd come home with bites, injuries, bruised, I never saw a single assessment of any kind regarding his development in the 8 months he was there and he never bought any artwork or the like home with him. Most times I picked him up it was just a case of kids running riot. One day the manager phoned me and told me that Ofsted had been round and the nursery was being closed as of that day and it transpired it was due to safeguarding concerns.
I then put my son back with his initial childminder and it suited my son so much better. I started getting assessments on him and progress reports etc, he'd be learning so much and was clearly much happier there.
When he hit pre-school age me and DH after lots of discussion decided that pre-school would be beneficial for a variety of reasons and so placed him in one.
After 5 months of being there, despite me asking, there haven't been any assessments on him, I don't think any learning takes place, I constantly have accident forms to sign, his behaviour has deteriorated since being there and again, when I go and pick him there's just kids running wild, screaming and shouting etc and it just seems a bit out of control.
Me and DH recently spoke about our concerns about the pre-school and we have now handed in a letter to inform the we will be withdrawing our son from their care and he will be returning to a childminder.
I know every nursery is different etc etc but in my opinion, apart from kids meeting other kids I haven't seen any benefit of being in a nursery or pre-school environment that a parent/childminder can't provide themselves.
Children can be exposed to other children and socialise with them in lots of different ways, it's silly to think if a child doesn't go to nursery or pre-school they are going to be introverted, clingy, not know how to form relationships etc etc
I have a young baby at the moment and based on what I've learnt from my experience with my older son, this one won't be attending a nursery.