You sound to me like you are being very picky. I agree with your husband. If we are too friendly with parents they will each talk to us so much that it's hard to get enough done. Imagine if we give 10-15 minutes to 4-5 families in the morning and another 10-15 to a few at night? It adds up and accidents, fighting, and toy and property destruction happens when we are distracted. The nicer we are the more we hear about everyone's personal drama. If you happen to be someone like me that cares about people it can take a toll after awhile. I end up knowing more than I should and spending a good amount of my bedtime hours worrying about my kids and their families. I only care for a handful of children on day and night shifts. I can't imagine how much harder it would be in a big school.
Why do you feel the teacher and aide need to be outside? Were there too many children for just one person? Or are you thinking that there haven't been enough actual school work. It is summer.
I'd give it some time before you are making any decisions one way or another.