Courses at McLennan Community College are offered in credit hours. A three-hour course in a traditional 16-week fall or spring semester meets with an instructor for three hours a week. Students are in the classroom with an instructor for 3 X 16 = 48 hours. A four-hour class would meet four hours a week, so in a full semester this would total 4 X 16 = 64 hours
For college-level courses, students are expected to spend two hours outside of class studying, reading, writing and practicing. This means that a three-hour class is really a nine-hour time commitment per week in a traditional fall or spring semester: 9 X 16 = 144 hours of work. Similarly, success in a four-hour class equates to a 12-hour per week commitment or 12 X 16 = 192 total hours working on the material.
Courses are now offered in shorter semesters and online, but the total time commitment remains the same. For example if you take a three-hour “flex” course that starts in the middle of a fall or spring semester but ends at the same time, then you still must still plan for 144 hours working on the material. But since you now only have eight weeks to complete the class, you should plan your schedule to allow for 144/8 = 18 hours per week working on the material.