I think learning to be happy with a B is an important skill. I don’t believe that As should be effortless. If an A is effortless, then that means the kid wasn’t in a challenging enough class. In real life the only reward for hard work is more work. Leaning when they want to push for the A and when they want to be content with a B is an important think for them to decide. Perfection should never be the goal. That’s how kids burn out at the college level.