Twitter In The Classroom
J. Michael Arrington (born March 13, 1970 in Huntington Beach, California) is a serial entrepreneur and the founder of TechCrunch, a blog covering startups and technology news.
Arrington attended Claremont McKenna College (BA Economics, 1992) and Stanford Law School (JD, 1995), and practiced as a corporate and securities lawyer at two law firms: O’Melveny & Myers and Wilson Sonsini Goodrich... → Learn More

Edmodo says it’s going to be Twitter for teachers and students, with features like calendaring events that are tailored to the classroom. Personally, I think Twitter itself works just fine as the Twitter for teachers and students, but give edmodo a shot if you’re interested. They’re taking signups for the private beta now.