What is the course rating of a golf course?

The course rating represents the difficulty of a golf course for a scratch golfer (0 Handicap Index), calculated to the nearest 0.1.

More about the course rating of a golf course

The course rating is calculated from the effective playing length and obstacle factors for 9 or 18 designated holes.

This is the score the scratch golfer is expected to shoot on the course.

The course rating number goes up with the difficulty of the course.

What is the slope rating of a golf course?