Many schools expect kids to sit still and focus on work, but in reality, this is really difficult for most kids. With the rise of ADHD, ADD, anxiety, autism spectrum and sensory issues this adds a whole new layer of difficulty for kids.
Our Kor Wobble chair kids test team consisted of two three year olds using the toddler stool, a kindergartener using the kids stool, and three 2nd graders/ 1 first grader using teen and kids stools. The size of stool is dependent on the individual kid due to varying heights. My daughter is 8 and prefers the kid stool, but can easily use the teen stool as well.
The first grader and one of the second graders LOVED using these stools to recreate a superman flying effect. This builds core strength, balance and confidence in their own bodies and abilities as well.