There is not much point to that because you have to keep a log of the hours worked on the course. You can't just sign up for the course then book your brush up for the week after. And you will be paying money out for course notes twice.
You have to go through it and complete tests after every section normally.
Its a pity really because if your have any decent background in engineering and science you will have done quite a few technical subjects to death prior to starting.