Ladder classroom desks and chairs are available in various styles and brands in the market. When we buy ladder classroom desks and chairs, apart from quality, shape, and environmental protection, there is another very important issue, that is, size. Choosing a suitable size will help students adjust their sitting posture, protect the lumbar spine and cervical spine, and help students devote themselves to learning. So, what is the right size when we choose ladder classroom desks and chairs?

Seat height: the distance from the seat surface point to the ground, generally 400-420mm.

Seat width: the width of the seat plate, more than 400mm is the most suitable.

Seat depth: the distance from the front edge of the seat board to the backrest, generally between 400-450mm.

Back height: the dimension from the seat surface to the highest point of the chair back, generally not exceeding 800mm.

Armrest height: the distance from the highest point of the armrest to the ground, about 630mm is the most suitable.

Total depth: the distance from the frontmost point of the seat to the rearmost point of the seat back, which generally affects the row pitch of the seat, and is generally within 760mm.

Sitting angle: the angle between the seat surface and the horizontal plane, generally between 2°-3°.

Back inclination angle: the angle between the back surface and the horizontal line, between 100° and 120°.

For example: if the student's height is below 190cm, then ladder classroom desks and chairs used in the amphitheater should be 52cm high, the height from the table to the ground is 40cm, the height of the chair is 29cm, and so on.