A double major is a program of study that meets the requirements of two distinct majors in a single Bachelors degree. The program of study consists of courses required to meet the degree requirements for each of the two majors, together with the courses needed to meet the general education requirements for the degree. The minimum number of credit hours required for a double major equals the total number of credit hours required for the major comprising the larger number of credit hours for the degree.
Students may apply the same coursework towards the fulfillment of requirements for both majors. Students who complete the requirements for a double major receive a single diploma that acknowledges both majors.
Because a double major program leads to a single Bachelors degree, each of the two majors must be associated with the same degree type (i.e., both must be registered as a BS degree or both must be registered as a BFA degree).
You can find the Double Major policy here: Double Major Policy
A dual degree program is one in which the student works towards satisfying the academic requirements for two distinct degree types in an integrated fashion. Currently at the RIT undergraduate level, this option applies solely to those students who aspire to earning the Bachelor of Science (BS) and the Bachelor of Fine Arts (BFA) in a single program of study. Students may apply the same coursework towards the fulfillment of the requirements for both degrees. To achieve the academic depth and breadth implied by a program of study that results in the awarding of two undergraduate degrees, a dual degree program consists of substantial additional coursework as compared to that required for a double major; namely, a minimum of 30 additional semester hours beyond the credit hours required for the degree program comprised of the smaller number of credits. Students who successfully complete a dual degree program receive two diplomas, one for each degree earned.