A seat and desk assembly has a seat integrated with a desk by a interconnecting base and floor. One or both of the seat or desk can be disconnected from the assembly and used independently. Removable panels for the desk can be used to display information and hold replaceable placards for various purposes. The height of the seat and desk can be adjusted on the assembly, and the bottom rest of the seat can be pivoted up against the back to allow a user to stand on the floor as a standing platform with a lumbar support curve positioned for leaning support of the low-back while standing. The depth of the seat can also be adjusted relative to the desk to provide additional room for standing. Additionally, the tabletop of the desk may be able to slide fore-aft relative to the seated user.