It sort of depends on the subject. My parents know I do well in Engliush and Bio so they expect good grades of me. But they also know that French and Math are my weak subjects and are more understanding with them. But as they always say, they just want me to do my best.

My sister was valedictorian of her high school 2 years ago and my parents were so proud. I just told them not to expect anything like that of me...and they don't. (My sister is a study-freak and all...)