A measure of the amount of work required for a course. The Department of Education calls for a minimum of approximately one nominal hour (50 minutes) of class time and two hours for independent student work per week, per credit hour for a C average. More information regarding Ohio State's policies on credit hours can be found on the Registrar's website. Instructors can also refer to the Credit Hour Estimation page to help determine the amount of time students might need to complete work in a particular course. (For example, a three-credit, 14-week course would, according to those policies, require three hours of structured learning time for students per week plus an average of six hours of homework and assignment preparation.)