Moodle is a wonderful way that you can teach your students using a virutal classroom. Students can log on to Moodle using their log on for the district computers and can complete assignments in the library, at home, or even on vacation. Teachers can put quizzes, have students respond to an article posted, or even just have forum discussion.
Teachers can remain in communication with students even when not in the classroom by providing feedback on each assignment, that is private only to that particular student.
Here is a great Moodle Resource which shows you how to get your Moodle up and running! RRISD Moodle Wiki