I could now link my google sites (my school websites, for example, https://sites.google.com/site/worldhistoryclasssite/home) to my school gmail account too! In addition, I was able to save certain google maps for easy retrieval in the account so I could bring them up to have students look at them during class. In addition, my personal google calendar would now sync with my professional one, so I would always know where to be and when without having to take the often forgotten added step to do so. In addition, I now could sign on jointly to my personal and work accounts at the same time. So, when home looking at the status of a group project on a google doc, I could observe how students had progressed and comment on it within their shared doc without having to log out of my personal gmail or stop my blogging. It was awesome! It is awesome!
Something odd, but beneficial. If a school uses google, it doesn't need to change their employees actual email addresses. So, if everyone is use to a certain email address and it is already all over letterheads, posted on the school's district site, and on business cards, there is no need to change it. I started with the email address email@example.com and it is still mine. When I login in, I actually login into google with that full email address. It's odd, but it works. I can see this as useful for the administrators at schools.
Regardless, google for schools is awesome and if students are also given screen names through schools, you can then talk about having chats with students during class online or during lunch, etc... The possibilities here are endless.