A Kneeler Conversion Kit has been fashioned to convert the Prone Stander to a Prone Tall Kneeler. This is especially effective for individuals with tight hamstring muscles or ankle/foot contractures that would otherwise prevent them from weight bearing down through the lower extremities. It is an ideal way to begin a standing program as the tall kneeling position encourages hip, trunk, and neck extension in a non-threatening position. As an added bonus, when the knee block and kneeler conversion are interchanged for the same user, no other adjustments are necessary and the child can remain at eye level with his peers.