After the completion of formal training, interior designers will enter a 2-year to 3-year apprenticeship to gain experience before taking a licensing exam. Most apprentices work in design or architecture firms under the strict supervision of an experienced designer. Apprentices also may choose to gain experience working as an in-store designer in furniture stores. The NCIDQ offers the Interior Design Experience Program (IDEP), which helps entry-level interior designers gain valuable work experience by supervising work experience and offering mentoring services and workshops to new designers.