What do you look for in a riding school?

[Onyxia]

Short version,have had some dificulty finding one I am happy with in my area.
I was lucky enough to be close to two very good ones as a teen and guess I sort of see anything not up to that standared as "wrong"
Need a RS capable of helping me do my stages and teaching 5(6 in Autum) son to ride without spoiling the fun.

The couple I am thinking about ar nice enough,but a couple of little things are putting me off.
What would make you run screaming,andwhat o you consider to be OK?

 

[kittykatcat]

Horse welfare number one - some riding schools i have seen work their horses all day every day and they look so miserable, even if they look 'healthy' sad.