enhance understadning of class materail

[bosun]

I wonder if the following sentences are acceptable.

You have to review what you have learned and read the class material in advance as a way to enhance your understanidng of the course material.

( I would appreciate any comments)

class materail and course material interchangeable??

[Tdol]

understanidng- spelling
class material- I would use 'course' here but 'class' is OK.