The general size requirements of school wallboard are as follows

The height should not be less than 1000 mm, and the width should not be less than 3600 mm in primary school and 4000 mm in middle school.

For the blackboard material, it has also changed from a single cement material to a wooden blackboard, a glass blackboard, a color steel blackboard and so on. Due to the limitation of construction conditions, the cement blackboard also has a bad influence on vision, and it is prone to cracks and discoloration. Wooden blackboards are more susceptible to climatic conditions, resulting in moisture and deformation; Due to the limitation of the product itself, the glass blackboard is not easy to move and fragile, and the size of the glass blackboard cannot be changed at will, and the transportation damage is also great; Color steel blackboard is the most popular blackboard equipment at present, and it can design the size and specifications according to the needs of customers. The color steel blackboard is not easy to wear, has good hardness and is convenient to write. It plays a good role in protecting eyesight and is of great help to current teaching and people's lives.