How to find out which is the best school in AVADI?

How do we identify and select a school as a best school in AVADI.
Fist list all the schools that can stand this selection:

1. Nazareth Matriculation Hr Sec. School
2. Rajalakshmi School.
3. Vivekananda School
4. Central School - HVF
5. Imaculate School
6. St. John's School

Please add comments with more school that can be listed out.
How do we identify the best school?
Should we conduct survey with the Kids studying?
Should we conduct survey with the teachers educating the kids?
Should we conduct survey with the parents whose kids are studying?
Should we rate based on the facilities like lab, no of classroom, no of computers, no of teachers?
Should we rate based on the educational qualification of the teachers?
Should we rate based on the upskilling training conducted for the teachers?
Should we rate based on the IQ of the students studying?

These are some of the questions which come up to my mind if I think about this?
Lot of questions to answer before we start selecting some of the schools and discuss about the best.