The course description lists the course credit hours and the total number of contact hours per week, by activity, that the student attends the class assuming a 15-week semester. For instance, a 4-credit hour course that is listed for 45 lecture and 30 lab means there are 45 hours of lecture plus 30 hours of lab during a 15-week semester or an average of 5 hours contact hours per week. In this example, a student attends a total of 75 contact hours. The 75 hours can be adjusted to any length term.