If you have a dozen children in a first grade classroom, likely one size chair will not fit each child comfortably.  If their chair is too large, you will find a child antsy.  If their chair is too small, he or she will be quite distracted.  Helping each have a chair that fits their height well will increase their focus and attention.

Chair sizes are measured from the floor to the top of the seat.  Most adult chairs are 18″ high.  While the above chart is helpful, you can also measure from the floor to the back of the knee on children to determine what size chair will work best for them.  You’ll likely be surprised at the variance you’ll find within the same kid’s age group!