3 options in Nebraska.
Study books and just test.
Take an all day class, then test.
Study books, take the class, then test.
I read thru the books and took the class, and the test was still a bit challenging. I think it should be a hard test that requires studing.
There were a group of guys behind me that were applicators for a, lets say a major lawn care company who were there hoping to pass the test after sitting thru the class. I would bet my new Scag that all six of them were back for more.