What is a credit?
The credits for a course identifies how many hours per week that you will be in the
classroom for that course.
A 3 credit course = 3 hours in class per week
How much time do you need for college?
2 to 1 Rule
To effectively balance your time, every hour (credit) that you spend in a class will result in you spending 2 hours outside of the class on homework.
You register for 6 credits = 6 hours per week in class. Using the 2 to 1 rule you would need to schedule 12 hours per week outside of class for study.
6 hours in class + 12 hours outside = 18 hours per week