The present invention relates to a control system for improving teaching efficiency using a multi-purpose glass board. The control system of the present invention comprises: a glass board in which an anti-reflection glass plate and a screen are stacked; a projector which includes a projector unit for projecting class materials through the glass board and a camera for photographing the glass board; a control set which is connected to the projector in a wired or a wireless manner to transmit the class materials to the projector and to receive an image of the glass board photographed by the camera from the projector; a first terminal which communicates with the control set in a wired or a wireless manner to transmit the class materials to the control set; and a second terminal which communicates with the control set in a wireless manner to receive the image of the glass board from the control set. Therefore, teaching efficiency can be improved.;COPYRIGHT KIPO 2018
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