A Continuous Enrollment Cycle allows students more flexibility for your USMLE Step 1 Prep. With up to 17 possible opportunities for a start date per course cycle along with multiple attendance formats, there's sure to be a convenient schedule option available - Whether attending Live In-Center or Live Online. The USMLE Step 1 is a one-day computerized exam that assesses student's comprehension and application skills related to the basic sciences of practicing medicine.