how old is the school? is it the same people running it since it opened or they keep shifting responsibility to others like many young schools?
Oldest class is 7th grade. They have the same administrator since the beginning. He opened the school. They took a principal when they had a 1st grade and she is still there. She oversees preschool and elementary.
I know this doesn't help much, but I work in the building (not Sanz specifically) because they rent out to a few places and I'm very impressed with what I see. It's very warm and all of the kids always look very happy which would be a huge pull for me to send to a school.