if the interviewer tells you that, you probably don't want to work there anywayKind of along this train of thought... I was once told in an interview "Good grades only mean you know how to take a test". I felt a little insulted by that comment. I feel that I put a lot of effort in maintaining my grades while working two jobs. I do believe that my efforts have paid off though, graduating with a GPA of 3.95 and Valedictorian.
Knowing how to take a test helps, but if you don't know the material, you won't succeed.