In a virtual classroom, the teacher may communicate with the students in real-time using video or Web conferencing. This type of communication is typically used for giving lectures and for question and answer sessions. If the teacher only needs to send out a homework assignment, he or she can simply post a bulletin on the class website. The students may also receive an e-mail notification letting them know a new assignment has been posted. If class members have questions about the homework, they can participate in online forums or submit individual questions to the teacher.
Virtual learning environments are a popular method of e-learning, which refers to learning through electronic means. While a VLE cannot fully replace the traditional classroom, it can be a useful way of teaching students who reside in many different locations.