I am a long time fan and user of Schoology.  So is 50 Sites guest Charles Black.

Professor Black writes, " is a social networking service and virtual learning environment for K-12 school and higher education institutions that allows users to create, manage, and share academic content."

It is indeed, that an MUCH more.  Constant innovation, systems updates every Thursday, and an unparalleled approach to customer service make them the go-to for your classroom and District-wide LMS.

Is your LMS truly free?