Answer : Professional designers have a long period of study because they usually offer services as consultants in several areas including architecture, interior design, and landscape. It takes many years to develop the skills necessary for these professions and to participate in the required exams. The field of interior design offers training at multiple levels, with bachelor degrees being offered at schools like Parsons School of Design located in New York. At Parsons' bachelor program students can study any number of things including color theory, textiles and fabrics, surface treatments or furniture history depending on what they are interested in before their next career choice.