It is recommended that students complete the lower-level courses (300-level) before the upper-division (400-level) courses. Many nursing courses include theory and clinical projects. Total clock-hours of theory time and clinical projects are based on 55 minutes of classroom instruction per credit hour per 14 weeks (one trimester). Theory and clinical projects of each nursing course must be satisfactorily completed in order for course credit to be granted. Online nursing courses are designated by the DNRS course letters.