It is best to set the study desk in the children's study room to face the window or back against the wall. You can only choose one side and which position.

In geomantic omen, leaning against the wall is better than facing the window, and leaning against the wall makes you feel safe. If you lean against the door, you will worry about being peeped, and you will fidget when you study. You can face the window sideways, but not directly. The window is an outlet of the house, which will bring in angry and discordant air, especially the window opening to the outdoor sidewalk, which will bring in more discordant air and have no good influence on your study.