First of all, no matter what the structure of each house is, there is a "Wenchang position", and it is easy for children studying in the "Wenchang position" to get good grades. Where is Wenchang? Specifically, it is very complicated and simple to determine: if the child feels relaxed, not depressed, not easily tired and comfortable in that position, it is "Wenchang position".
Secondly, the floor is made of wood. If it is cold and smooth tile and slate floor, it can be solved by laying soft bedding such as carpet on the floor. In addition, the color of the ground should be deep rather than shallow. If the color is too light, the child will not sit still. If the color is darker, children will be easy to meditate and have a sense of practicality.
Third, the line of sight in front of the desk is better. If the scenery is beautiful or the line of sight is good, it indicates that children have a bright future in learning and are not easy to feel bored and tired. Some parents like to keep their children in a nearly closed study, fearing that their children will be distracted by the outside world when studying, which may be counterproductive.
Fourth, children sit in front of the desk, and it is best not to have doors or windows behind them, otherwise they will be easily distracted and unable to concentrate. If they have a wall behind them, this situation can be avoided.
Fifth, the color above the room should be light, and there should be no light beam. Pressing the beam is not a good thing, it will increase the pressure on children.
Children's academic performance is not very good, you can try to change it with the above methods for reference.
I suggest you find a feng shui master, or check the feng shui of residential layout online. There are usually solutions. Hope to adopt, thank you!