The step stool includes a front frame member, a back frame member, a first side frame member, a top panel having a top front panel and a top back panel, and a support panel member. The top front panel is hinged to the top back panel at a top side middle hinge on the midline of the top panel. The support panel member reinforces the midline of the top panel in the assembled configuration. The base end of the support panel member is aligned with the base ends of the front frame member and back frame member to support the weight on the step stool. The top front panel and the top back panel fold around the support panel in the storage configuration.