Google Sites- free awesome feature

"Getting a Google Site off the ground from scratch was simple, but I wanted more control over which pages the students could view and change. Additionally, I needed to be able to separate the pages that served as my personal notepads from those I was going to have to eventually show to my faculty mentor. With page-level permissions, you decide who has access to each part of your Site".........read more in

Google Student Blog: Get organized this fall with page-level permissions in Google Sites