Virtual Classroom - Streaming Video & Audio

Hello, our local school board has asked us to find a high end system that will let a teacher in "school A" teach students who are in "school B". Basically a streaming video & audio system for education.

Anyone have any suggestions on a product?


Usually these types of modules are extensions of existing class or learning management systems.

Do you know if there is already a system like Blackboard or eCollege being used?