To provide a classroom system which allows a simulation class performed by an applicant for a teacher to be observed in a multilateral and multifaceted manner.SOLUTION: A classroom system includes a quadrangular classroom A whose front, back, left and right sides are surrounded by walls W1, W2, W3, W4 in a plan view, and an observation room B having an L-shape in a plan view and provided adjacent to the classroom A by sandwiching the back wall W2 and one wall W3 out of left and right walls of the classroom A. The back wall W2 and the one wall W3 of the classroom A are constituted so that the inside of the classroom A can be visually observed from the observation room B.SELECTED DRAWING: Figure 1
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