When Google+ first came out I was excited about the prospect of using the Google+ Hangouts as a way to host online tutoring sessions. Unfortunately, at that time Google+ could only be used with personal Google (@gmail.com) accounts. Today, that changed as Google announced that Google+ can now be activated for Google Apps for Education users.
Applications for Education
Enabling Google+ in your Google Apps for Education domain will allow teachers and students in your school to take advantage of all of the Google+ features like screen sharing and Hangouts to host online tutoring sessions. You can also activate third party apps like Concept Board to host online collaborative brainstorming sessions.