Before you click “Like” on a Facebook picture make sure your boss is not log in!, a common way you can get fired from a job is staying on top of your social media pages while at work, especially if this does not required the used of networking. “Chequing your Twitter account while your client is waiting to get her hair cut” Not professional.
One way teachers could be fired from their job is by following their students or requesting them as friends in social media, some states required to block students who are following them.
Blogging about your students not allow, teachers should never make any comment regarding any student in social media. There has been teachers that lost their job for doing this.