The desks are divided into "No.4" and "No.5" labels, which are used by junior high school students and primary school students respectively. It is suggested that "No.4" desks and chairs are mainly used by first-year students, and the standard height of "No.4" desks is 67 cm. For some students with special height, the school can allocate desks and stools separately.

Its realization Today's desks are mainly divided into the following three categories:

Solid wood desks: In 2000, most schools used this traditional solid wood to make single and double desks. This kind of table is easy to process, made of miscellaneous wood, which wastes a lot of wood and is not durable. It is still used in primary and secondary schools in many poor areas. Because the height of the desk and stool is fixed, it is gradually replaced by the adjustable desk with steel-plastic structure.

Lifting desk: Also called adjustable desk, as the name implies, it can adjust the height of the desk and stool, and adjust the height of the desk by adjusting the relevant fasteners of the table legs up and down between the sliding shafts to meet the needs of schools and students. This desk is mainly made of steel-plastic structure, with the desktop made of melamine, the legs made of steel pipes, and the relevant ground connection parts protected by plastic caps.

Rubber-plastic desks: mainly made of rubber-plastic alloy materials, and the products of school desks and chairs are mechanically formed. Most of these products are fixed structures with adjustable height, but they are also adopted by some schools because of their special materials, good materials, durability and portability.