First off, if you're opening a center, take a look at the DNA (Day Nurseries Act). Your sister who will be taking her ECE course will learn the DNA inside and out!

Everything that Reggio has stated is very true. I am an RECE (Registered Early Childhood Educator) and like Reggio, have worked in centers as well.

Here is the DNA website to get you started in your research:
http://childcarelearning.on.ca/

Good luck!