thread asking this yesterday - more ideas
Recommendations from friends is how I chose.
I think you should look for how friendly and confident they seem with the children in their care.
What is their ethos? So do they consider themselves more prep for school, home from home, combo of two.
Look at their displays, are the rooms bright and inviting? Does the work of the kids show that they do varied actvites?
Do they have weekly plans? topics? Do they try to link with local area/history/environment?
Do they have an outside space? How is it used? how often and is it mixed aged shared?
What are their strategies on misbehaviour? Do they use sanctions? What are they?
How do they monitor their children's well-being and progress? Do they have times when they observe children playing and keep notes? Will they be sharing these observations with you. (my dds nursery had 'learning stories -just little observations like, dd knew when she'd pooed her nappy today, she pointed at her bottom and said 'poo' - they kept these together in a big folder which was sent home periodically)
Do they make the children's meals on site? Ask to see a sample week's menu.
And of course,
Do the kids look like they are having fun????
These are just lots and lots of ideas, you don't need to be looking for all of them, but maybe think about which are important to you, you can ask for a copy of their policies and that'd cover quite a lot. Hopefully you ds will love it