To become a Registered Interior Designer (RID) in Oklahoma, in order to use that title and receive your registration number, after passing all three sections of the NCIDQ, you must register with the Board of Licensed Architects, Landscape Architects, and Registered Interior Designers. https://www.ok.gov/Architects/
Both the IIDA Texas Oklahoma Chapter as well as IIDA Headquarters offer opportunities to apply for financial assistance upon passing all three parts of the NCIDQ Exam. Please review the following websites for details on eligibility and the application process: http://www.iidatxok.org and http://www.iida.org.